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# Does silicon have 4 valence electrons

The total number of electrons present in the valence shell of an atom are called valence electrons, and there are a total of four electrons present in the valence shell of silicon (3sÂĠ3pÂĠ). Thus, silicon has four valence electrons. Valency of Silicon (Si Silicon is element 14 in the Periodic Table It has two electrons in its first shell, eight electrons in the second shell, and four electrons in the third shell. Since the electrons in the third shell are the outermost electrons, silicon has four valence electrons

### How Many Valence Electrons Does Silicon (Si) Have

1. Silicon has 4 valence electrons. The outer electronic configuration of Si is 3 s 2 3 p 2.. Thus, Si has 4 valence electrons
2. Silicon has 4 valence electrons. The number of valence electrons of silicon can be predicted using its position in the modern periodic table
3. The number of valence electrons could be: View solution By passing a certain amount of charge through NaCI solution, 9.08 L of chlorine gas were liberated at STP
4. Si (silicon) is in the fourth group, has 14 total electrons, and four valence electrons
5. Valence electrons of silicon are 8. Thus to complete its octate it either needs to loose 4 elctrons or gain 4 electrons, but this requires high amount of energy/heat. So normally it doesnt do it, but yes it does have the ablitily to shows +4/-4 valency. Moreover it can share its 4 electrons to complete the octate, hence its covalency is 4

### How many valence electrons are in a silicon atom? Socrati

Click here í Ẅíḟ to get an answer to your question ïẁ How many valence electrons are there in silicon, which has an atomic number of 14? A. 2 B. 4 C. 6 D. 8 justagirl983 justagirl983 11/01/2016 Physics High School How many valence electrons are there in silicon, which has an atomic number of 14? A. 2 B. 4 Step 4: Place remaining electrons around the other atoms. Both Oxygens have eight remaining valence electrons (four each), but the Si has four valence electrons. So we need to move two electrons between Si and O to create a double bond. Now Distribute the remaining 8 electrons so that each atom has an octet How may valence electrons does a silicon atom have? a) 0 b) 1 c) 2 d) 4 e) None of the abov Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band asked Dec 21, 2018 in Physics by Maryam ( 79.2k points How Many Valence Electrons Does Silicon (Si) Have?||Number of Valence Electrons in Silicon (Si) ?||How many electrons does silicon have in its valence shell?..

In solid state electronics, either pure silicon or germaniummay be used as the intrinsic semiconductorwhich forms the starting point for fabrication. Each has four valence electrons, but germanium will at a given temperature have more free electrons and a higher conductivity 6) P type material is created by doping pure Silicon with impurity atoms that contain Valence electrons. 7) Find the diode current l, for a diode that is forward biased at a voltage of +0.62 V given that the diode has the following parameters: Reverse Saturation Current Is = 8 nA (that is, Is = 8 x 10-A) n = 1.4 at the given operating point. Although the silicon atom has 14 electrons, their natural orbital arrangement allows only the outer four of these to be given to, accepted from, or shared with other atoms. These outer four electrons are called valence electrons and they play an immensely important role in producing the photovoltaic effect

How maney valence electrons does it have its right? Its electron configuration In corn rotation, we can see outside the core here, silicon has four valence electrons and for C which sub shells hold the villains electrons. So we outside the core you balance electrons are located in the three s and three p sub shells If the number of valence electrons is greater than or equal to 4, valency is determined by subtracting the number of outermost shell electrons from 8. Atomic number of silicon=14 Electronic configuration=2,8,4 Valency of Si= 8-4=4, hence its valency is 4 We have shown the Valence Electrons of the elements for which reliable data is available. Valence Electrons Graph - Valence Electrons of all the elements in graph 14 Si - Silicon: 3s2 3p2 15: P: Phosphorus: 15 P - Phosphorus: 3s2 3p3 16: S: Sulfur: 16 S - Sulfur: 3s2 3p4 17. Silicon has 4 valence electrons. 14 electrons, 14 protons, and 14 neutrons From the diagram, we can see that silicon has 14 total electrons. 4 are valence electrons and 10 core electrons. Therefore option C is the correct answer. Become a member and unlock all Study..

Carbon, silicon and germanium are semiconductor elements, and these have precisely four valence electrons in their atoms. Insulators. When the number of valence electrons in the atom is more than four, the element behaves as non-metal. The non-metal is a bad conductor of electricity Answer to How many valence electrons does a silicon atom have? a. 0 b. 1 c. 2 d. 4

### How many valence electrons does silicon have

• How many valence electrons does Silicon (Si) have? 4. How many valence electrons does Hydrogen (H) have? 1. How many valence electrons does Beryllium (Be) have? 2. How many valence electrons does Neon (Ne) have? 8. How many valence electrons does Mercury (Hg) have? 2
• Each 'Silicon atom' has its electrons arranged in groups of energy levels or shells as the following: First orbit, the inner most energy level has 2 electrons (completely filled). Second orbit has 8 electrons (completely filled). Third orbit has the balance of 4 electrons (partially filled)
• Silicon contains 4 electrons in its outer shell, thus it has 4 valence electrons. The electronic configuration of Silicon is 2, 8, 4. 21) how many valence electrons does a noble gas typically have
• Electrons extracted from valence shell and not subject to force of attraction of nucleus on them are called free electrons. Silicon atom representation as a tetravalent material is shown in Fig. 2.2 as a basis to understand the concept of covalent bond formation etc. Silicon semiconductor, as a 'Tetravalent' material, has 'four valence.
• ate the core. We will not eli
• Silicon, likewise, will not let go of its four valence electrons, and does not even like to share them very much if the alternative of sharing them with an oxygen atom is possible. Both carbon and silicon find that hybrid sp 3 tetrahedral orbitals are the most stable, with the angle between bonds equal to 109ÂḞ 28', the tetrahedral angle ### How many valence electrons does silicon have? Study

12. Oxygen atoms form 2 covalent bonds because oxygen atoms have 6 valence electrons (2 lone pairs plus 2 unpaired electrons that are shared to achieve octet). Can Silicon bond with itself? Silicon has the same number of electrons in its outer shell, meaning that it can form four bonds just like carbon How does sulphur has atomicity 8, when its valence electrons are 6 like oxygen- ie even 2 sulphur atoms can share a pair of electrons and achieve the octet rule, why it should involve 8 atoms . asked Nov 20, 2019 in Important Questions by megha00 ( -5,307 points Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass Carbon, silicon and germanium are semiconductor elements, and these have precisely four valence electrons in their atoms. Insulators. When the number of valence electrons in the atom is more than four, the element behaves as non-metal. The non-metal is a bad conductor of electricity

Silicon is the element with atomic number 14, and it is also in group 14 of the periodic table, just below carbon. It has the chemical symbol Si. Its electron configuration is 1s 2 2s 2 2p 6 3s 2 3p 2. Silicon can remove four electrons and form a +4 charged cation, or it can share these electrons to form four covalent bonds Does this means the electron lies deep down in the inner energy level like in 1s energy level? and if there is no electrons in the forbidden band, how can we calculate the WF How many valence electrons are there in silicon, which has an atomic number of 14? A. 2 B. 4 C. 6 D. 8 Silicon has 4 valence electron, which has an atomic number of 14 Silicon has 4 outer shell / valence electrons. Forms into a lattice structure to share electrons. 7 Intrinsic Silicon E. C. E. V. The valence band is full, and no electrons are free to move about. However, at temperatures above T=0K, thermal energy silicon has only 1 free electron per

• The typical elemental semiconductors are silicon and germanium, each atom of which has four valence electrons. The properties of semiconductors are best explained using band theory , as a consequence of a small energy gap between a valence band (which contains the valence electrons at absolute zero) and a conduction band (to which valence.
• Silicon is the second element in the fourteenth column of the period table. It is classified as a member of the metalloids. Silicon is the eighth most abundant element in the universe and the second most abundant in the Earth's crust after oxygen. Silicon atoms have 14 electrons and 14 protons with 4 valence electrons in the outer shell
• (Silicon is in group 14 so it has 4 valence electrons) Each of these electrons can either be together in 2 pairs and have no unpaired or it can have 4 unpaired electrons depending whether or not it hybridized (ask teacher meaning of that word). 1 8. Josh G. 1 decade ago
• Some chemists define valence as the number of bonds the atom has formed actually. A univalent (monovalent) atom, ion or group has a valence of one and thus can form one covalent bond; a divalent molecular entity has a valence of two. The valence of an element depends on the number of valence electrons it has. Thus, it is never a negative.
• 3. Valence electrons are important because - A. They tell us how reactive an element is. B. They tell us if an element is a metal or nonmetal C. They tell the element's color 4. How many electrons does it take to fill the 3rd energy level? A. 18 B. 8 C. 2 Name _____ period _____ EXIT TICKET Valence Electrons 1. Valence electrons are.

Step 4: Find Valence Electrons. The total number of electrons present in the valence shell of an atom are called valence electrons, and there are a total of four electrons present in the valence shell of carbon (2s 2 2p 2). Thus, carbon has four valence electrons. Valency of Carbon (C How many valence electrons does Silicon Have? answer choices . 1 Valence electron. 2 Valence electron. 3 Valence electron. 4 Valence electron. 5 Valence electron. Tags: Question 48 . SURVEY . 30 seconds . Q. How many valence electrons does Lithium Have? answer choices . 1 Valence electron

How many valence electrons does silicon have? and how many valence electrons does oxygen have? Answer Save. 1 Answer. Relevance. Anonymous. 1 decade ago. Favorite Answer. Silicon has 4 valence electrons. 0 0. Still have questions? Get your answers by asking now. Ask Question + 100. Join Yahoo Answers and get 100 points today The average silicon atom has fourteen protons, fourteen electrons, and most have 14 neutrons. This is a digram of a silicon atom. This shows the 14 protons in the nucleus and where the 14 electrons are located. The four electron, highlighted in green, that are located in the outer ring are the valence electrons. How many electrons does silicon. Silicon has 14 electrons, but only the outer most 4 are available as valence electrons to help bond with other atoms. In its solid form, each silicon atom normally shares one of its four valence electrons in a covalent bond with each of four neighboring silicon atoms In silicon, germanium, and related compound semiconductors, these bonds are formed in such a way that neighboring atoms share their valence electrons having (on average) completed s in the valence shell. In these semiconductors, each atom forms four bonds with four other atoms (four nearest neighbors) and shares two valence electrons with each. 4. A silicon atom has valence electron. It requires another four to complete its outermost shell. (a) 1 (b) 2 (c) 3 (d) 4 5. How many valence electrons does germanium have? (a) 1 (b) 2 (c) 3 (d) 4 6. Silicon atom shares one of its valence electrons with each of its neighboring atoms

Structure of Pure Silicon Atom. The silicon atom has 14 electrons; however the orbital arrangement has solely 4 valence electrons to be shared by alternative atoms. These valence electrons play a crucial role in photo voltaic effect. Large number of silicon atoms bond together to make a crystalline structure Boron atom has three valence electrons and silicon has four valence electrons. The three valence electrons of each boron atom form 3 covalent bonds with the 3 neighboring silicon atoms. In the fourth covalent bond, only silicon atom contributes one valence electron, while the boron atom has no valence electron to contribute. Thus, the fourth. Helium is located in period 1, group 18 of the Periodic Table and has an atomic number equal to 2. Silicon (Si) Which element have 4 valence electrons? SO, the number of Ion is -2. because to far or difficult to donate 6. Opening a brand new window or tab in Selenium 3 wasnÃḃ t very intuitive as there was no built-in method to do this D.4 Solution: Option (D) Silicon has 4 valence electrons. Question: If we add an impurity to a metal those atoms also deflect electrons. Therefore, A.Electrical and thermal conductivities both increase B.Electrical and thermal conductivities both decrease C.Thermal conductivity increases but electrical conductivity decrease ### Why does silicon have four valence electrons? - Answer

• No. Germanium in the ground state has 32 electrons, 4 of these are valence electrons which can participate in chemical reactions. Perhaps that is where you are getting confused
• table. For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in group 6 and has 6 valence electrons. For charged atoms, there is a deviation from the normal number of valence electrons. The charge on an atom tells you how much of a deviation there is from an element's normal valence number. Electrons are negatively charged
• Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (E g ) C , (E g ) Si and (E g ) Ge

### How many valence electrons does silicon have? - Quor

Consider the element silicon (atomic symbol Si). Silicon is composed of 14 electrons, 14 protons, and (in most cases) 14 neutrons. In its ground state, silicon has two electrons in the n = 1 energy level, eight in the n = 2 energy level, and four in the n = 3 energy level, as shown on the energy diagram to the left. The chart also illustrates a. Silicon, with 14 electrons, has only filled 1s, 2s, 2p, 3s and half of 3p. It hasn't any electrons in 4s or 3d (in the ground state). Although the 3rd orbital can have a maximum of 18 electrons, the shell is considered full with 8 electrons if the 4s is not filled Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)C, (Eg)Si and (Eg)Ge Carbon has 4 valence electrons and oxygen has 6, for a total of 10. We want to arrange these 10 electrons in two octets, but two separate groups of 8 electrons would require 16 electrons. Only by sharing 16 - 10, or 6, electrons (so that those 6 electrons are part of each octet, and, in effect, count twice) can we satisfy the octet rule. This.

### How many valence electrons are there in silicon, which has

How many valence electrons does an atom of Silicon have? The protons attract and hold the electrons, but the farther away the electrons are, the less the attractive force. 12. In fact, the number of valence electrons goes up by one for each step across a period until the last element is reached. The number of valence electrons can be determined. Description : How many valence electrons does an atom of an element with an atomic number of twelve have? Answer : Silicon has a preference in IC technology because of the availability of nature oxide SiO . Space charge region or depletion region in a P-N diode has Answer: Four valence electrons. Silicon is having an atomic number of 14 which means It has two electrons in its first shell, eight electrons in the second shell, and four electrons in the third shell. Silicon has four valence electrons. The chemical symbol of silicon is Si. The electronic configuration of Si (Z = 14) = [Ne]3s 2 3p Silicon is a vital element semiconductor. Silicon is a group IV material. In its outer orbit, it has four valence electrons which held by covalent bonds with the valence electrons of four adjacent silicon atoms. These valence electrons are not available for electricity. So, at O o K intrinsic silicon behaves like an insulator. When the. Silicon atoms have 14 electrons and 14 protons with 4 valence electrons in the outer shell. Under standard conditions silicon is a solid. Silicon is considered a semiconductor, meaning that it has electronic conductivity between that of an insulator and a conductor. Its conductivity increases with temperature

How many valence electrons does a silicon atom have? a. 0 b. 1 c. 2 d. 4. asked Oct 30, 2020 in Physics by Saavya (51.6k points) 0 votes. 1 answer. Carbon, silicon, and germanium have four valence electrons each. asked Feb 25 in Semiconductor Electronics: Materials, Devices and Simple Circuits by soni02 (26.6k points) semiconductor electronics Similarly, adding electrons results in a negative oxidation state. We have also distinguish between the possible and common oxidation states of every element. For example, silicon has nine possible integer oxidation states from â4 to +4, but only -4, 0 and +4 are common oxidation states Silicon typically has four valence electrons which are involved in bonding. Phosphorous has five valence electrons, and aluminum has three. When a phosphorous atom replaces a silicon atom in a silicon crystal, it is called a donor because it donates an electron. When an aluminum atom replaces a silicon atom, it is called an acceptor Hence valency of silicon is 4. Is the Valency of fluorine? The fluorine atom has 7 electrons in the outermost shell and its valency could be 7. But it is easier for fluorine to gain one electron instead of losing seven electrons. Hence, its valency is determined by subtracting seven electrons from the octet and this gives you a valency of one.

Group IVA elements: C, Si, Ge, having 4 electrons in the valence shell as shown in Figure below form compounds by sharing electrons with other elements without forming ions. This shared electron bonding is known as covalent bonding. Note that the center atom (and the others by extension) has completed its valence shell by sharing electrons 10. How many valence electrons does a silicon atom have? Four valence electrons. 11. How many valence electrons does a germanium atom have? Four valence electrons. 12. The electric current caused by electron motion is called Electron current. 13 The p-block octet semiconductors are by far the most studied and important for technological applications, and are the ones that we will discuss in detail.. Zincblende- and wurtzite-structure semiconductors have 8 valence electrons per 2 atoms. These combinations include 4-4 (Si, Ge, SiC,), 3-5 (GaAs, AlSb, InP,), 2-6 (CdSe, HgTe, ZnO,), and 1-7 (AgCl, CuBr,) semiconductors All the carbon group atoms, having four valence electrons, form covalent bonds with nonmetal atoms; carbon and silicon cannot lose or gain electrons to form free ions, whereas germanium, tin, and lead do form metallic ions but only with two positive charges. Even lead, the most metallic of the carbon group atoms, cannot actually lose all four.

### SiO2 Lewis Structure Step By Step Construction - What's

• For example, a silicon atom has fourteen electrons. In the ground state, they are arranged in the electron configuration [Ne]3s 2 3p 2. Of these, four are valence electrons, occupying the 3s orbital and two of the 3p orbitals. The distinction between the valence and conduction bands is meaningless in metals, because conduction occurs in one or.
• Silicon, like other semiconductor materials, is unique in that it has four valence electrons. This characteristic causes the silicon atoms to bond together in such a way that they share their valence electrons. The result is a unique crystal lattice structure like that shown in Figure 5. Only the valence electrons are shown
• 1) 2, 2) 1, 3) 4, 4) 3, 5) NUL
• Silicon Dioxide Silicon dioxide is very much like carbon dioxide (CO 2) in the way the electrons are shared. If you look at the periodic table, you'll see that silicon (Si) is directly below carbon (C). When elements are in the same column, they act in similar ways. So, silicon creates two double bonds with two separate oxygen (O) atoms
• Why does Silicon Dioxide have a Giant molecular structure, while Carbon dioxide is made of simple molecules? They both have 4 electrons on their valence shells, so why wouldn't Silicon Dioxide be a simple linear molecule? (gaseous). Answers and Replies May 5, 2005 #2 The Bob. 1,100 0
• my textbook says that silicon(Si) has 4 unpaired electrons whereas i think that there are no unpaired electrons in Si as both the p electrons that are present are already paired. silicon - 4 valence electrons Shells would have 1 electron in each before pairing I would think your testbook is of the opinion silicon has arrangemen

### How may valence electrons does a silicon atom hav

• The key difference between silicon and germanium is that the Germanium has d electrons, but Silicon does not have any d electrons.. Silicon and germanium, are both in the same group (group 14) of the periodic table.Hence, they have four electrons in the outer energy level. Moreover, they occur in two oxidation states, +2 and +4.Silicon and germanium share similar physical and chemical.
• When the valence band contains 8 electrons, it is said to be a stabilized condition. When the valence electrons of one atom combine with those of another atom to become stable, it is called ionic bonding. If an atom has more than 4 valence electrons in the outer shell it is seeking additional electrons. Such atom is often called an acceptor
• g four covalent bonds would make it pretty stable and would not have any free-floating electrons characteristic of metals to make it a conductor. When silicon is used as a semiconductor, rather than having a pure silicon crystal, the crystal is doped with some other element.
• Beryllium has two valence electrons in its 2s shell, so its electron dot diagram is like that of helium: The next atom is boron. Its valence electron shell is 2s 2 2p 1, so it has three valence electrons
• In Figure 3 we show an atom of arsenic incorporated in a silicon crystal, grown for example from a melt containing a small additional amount of arsenic as an impurity. Arsenic atoms have 5 valence electrons. Consequently when they take up a substitutional position in the crystal lattice there is one valence electron left over, after 4 of the 5 valence electrons have been shared with the 4.
• For example, the pure semiconductor silicon has four valence electrons. In silicon, the most common dopants are IUPAC group 13 (commonly known as group III) and group 15 (commonly known as group V) elements. Group 13 elements all contain three valence electrons, causing them to function as acceptors when used to dope silicon

tend to have one, two, or three valence electrons. The nonmetals have ïỲve,six,orseven.Theinert gases have eight. The class of elements which have four valence electrons is called semiconductors. If a valence electron escapes its parent atom, it becomes free to move about. The parent atom the Silicon is a perfect example of a semiconductor. On an atomic level, silicon has four valence electrons and has the ability to form four covalent bonds. When it does so with four neighboring silicon atoms, the resulting crystalline silicon solid is implemented into solar panels It is also possible to encounter a molecule that seems to have too many valence electrons. When that happens, we expand the valence shell of the central atom. Example: Consider the Lewis structure for sulfur tetrafluoride (SF 4) which contains 34 valence electrons. SF 4: 6 + 4(7) = 34. There are four covalent bonds in the skeleton structure for. Each has 4 valence electrons and forms a crystalline material with a diamond lattice structure. Silicon and germanium have small enough bandgaps to be semiconductors. Are there other semiconductors similar to silicon and germanium? Gallium has 1 fewer electron than germanium and arsenic has 1 more ### How many valence electrons does a silicon atom have? a

How many valence electrons does a neutral atom of silicon have? A. 3. B. 4. C. 5. D. 6. Answer Save. 2 Answers. Relevance. Lauren. 1 decade ago. Favourite answer. B) 4 (14 electrons, 10 core electrons, and 4 valence electrons) 1 0. Anonymous. 5 years ago. 5. 0 1. Still have questions? Get answers by asking now Any element with five valence electrons could theoretically serve as a donor for silicon and produce n-type behavior, but the number of valence electrons is not the only factor to consider. The size of the donor core, and how it fits into the lattice, has practical implications, as does the chemical properties of the donor

### How Many Valence Electrons Does Silicon (Si) Have?Number

(i) Note the atomic structure of silicon and germanium in Fig. 4.8 carefully. The valence shell electrons in germanium are in the 4th orbit while the valence shall electrons in silicon are in the 3rd orbit; near to the nucleus. Therefore, the germanium valence shell electrons are at larger energy levels than those in silicon valence electrons Consider the element silicon (atomic symbol Si). Silicon is composed of 14 electrons, 14 protons, and (in most cases) 14 neutrons. In its ground state, silicon has two electrons in the n = 1 energy level, eight in the n = 2 energy level, and four in the n = 3 energy level, as shown on the energy diagram to the left A Lewis diagram shows how the valence electrons are distributed around the atoms in a molecule. Shared pairs of electrons are drawn as lines between atoms, while lone pairs of electrons are drawn as dots next to atoms. When constructing a Lewis diagram, keep in mind the octet rule, which refers to the tendency of atoms to gain, lose, or share electrons until they are surrounded by eight. The valence shell in a silicon atom has the number designation of (a) 0 (b) 1 (c) 2 (d) 3. View Answer: Answer: Option D. Solution: 13. Each atom in a silicon crystal has (a) four valence electrons (b) four conduction electrons (c) eight valence electrons, four of its own and four shared (d) no valence electrons because all are shared with. How Many Valence Electrons Does Manganese Have? By Staff Writer Last Updated Mar 28, 2020 4:47:16 AM ET. The element manganese has seven valence electrons. The electronic configuration of manganese is [Ar] 3d5 4s2. The atomic number of manganese is 25 and it has 25 electrons out of which seven electrons are in the last shell or orbit The noble gases (group 8A) are stable because they all have 8 valence electrons 12. Lewis Structures Lewis structures show ONLY valence electrons. Examples: Sodium (Na) is in group 1A, so we know it has 1 valence electron. Group 1A is known as the alkali metals Beryllium (Be) is in group 2A, so we know it has 2 valence electrons Atomic nitrogen has 5 valence electrons and 4 valence orbitals (2s, 2p x, 2p y, and 2p z). In the Lewis structure there is a triple bond between the nitrogen atoms and a non-bonding pair of electrons on each. This is consistent with the physical properties of N 2 If the valence electrons are 2, 4, 6, etc... ( even numbers ), nothing will remain because half of them will cancel the other half which will lead to zero magnetic electrons . Valence electrons with 3, 5, etc.. A: Atoms of these two elements have four valence electrons. When the atoms are exposed to an electric field, the valence electrons move away from the atoms and allow current to flow. Summary. Valence electrons are the electrons in the outer energy level of an atom that can participate in interactions with other atoms The conductivity of those elements with four valence electrons in the carbon group is not as good as the conductors but still better than the insulators, and they are given the name semiconductors. The two semiconductors of great importance are silicon (Si ) and germanium (Ge ), both of which have four valence electrons Si can be either a +4 or -4 ion, depending on what it's bound to. My question is for the -4 form. Si^-4 has an effective nuclear charge (Zeff) of +4 (14 protons - 10 core electrons), and 6 valence electrons. P^-3 has a Zeff of +5 (15 protons - 10 core electrons), and 6 valence electrons 349. A silicon material has an intrinsic concentration ni=10^10 per cubic centimeter at room temperature. If it is doped with 10^15 antimony atoms per cubic centimeter, what is now the approximate electron concentration at the conduction band? A. 10^5 electrons. B. 10^10 electrons. C. 10^15 electrons. D. 10^20 electrons

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