Carbon, Silicon, and Germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by $(E g)_{C}, (E g)_{S i}$ , and $(E g)_{G e}$ respectively. Which one of the following relationships is true in their case:

(E g)_{C} < (E g)_{G e}

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(E g)_{C} > (E g)_{S i}

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(E g)_{C} = (E g)_{S i}

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(E g)_{C} < (E g)_{S i}

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Solution

The correct option is B $(E g)_{C} > (E g)_{S i}$
The energy band gap in maximum for carbon , less for silicon and learnt for germanium
(Eg)c>(Eg)Si>(Eg)
Hence the correct option is B

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Similar questions

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)_Siand (E_g)_Ge. Which of the following statements is true?

(a) (E_g)_Si< (E_g)_Ge < (E_g)_C

(b) (E_g)_C < (E_g)_Ge > (E_g)_Si

(d) (E_g)_C = (E_g)_Si= (E_g)_Ge

Q. Carbon, Silicon and Germanium atoms have limn valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by

(E_{g})_{c}, (E_{g})_{s i}

and

(E_{g})_{G e}

respectively. Which one of the following relationship is true in their case?

Q. CEG : EGC :: LNP : ?

Q. Assertion :If there is some gap between the conduction band and the valence band, electrons in the valence band all remain bound, and no free electrons are available in the conduction band. Reason: Some of the electrons in the valence band may gain external energy to cross trhe gap between the conduction band and the valence band.

Q. Assertion :In some solids, the valence band is completely filled while the next higher band separated by an energy gap of few electrons-volts is completely empty. Reason: In insulators the energy band completely filled with electrons( the valence band) and above it is empty band (the conduction band)

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Carbon, Silicon, and Germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by (Eg)C,(Eg)Si, and (Eg)Ge respectively. Which one of the following relationships is true in their case:

The correct option is B (Eg)C>(Eg)SiThe energy band gap in maximum for carbon , less for silicon and learnt for germanium (Eg)c>(Eg)Si>(Eg)Hence the correct option is B

Carbon, Silicon, and Germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by $(E g)_{C}, (E g)_{S i}$ , and $(E g)_{G e}$ respectively. Which one of the following relationships is true in their case:

The correct option is B $(E g)_{C} > (E g)_{S i}$
The energy band gap in maximum for carbon , less for silicon and learnt for germanium
(Eg)c>(Eg)Si>(Eg)
Hence the correct option is B