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 $(E_{g})_{C}, (E_{g})_{S i}$ and $(E_{g})_{G e}$ .Which of the following statements is true?

(E_{g})_{S i} < (E_{g})_{G e} < (E_{g})_{C}

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(E_{g})_{C} < (E_{g})_{G e} > (E_{g})_{S i}

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(E_{g})_{C} > (E_{g})_{S i} > (E_{g})_{G e}

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(E_{g})_{C} = (E_{g})_{S i} = (E_{g})_{G e}

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Solution

The correct option is C $(E_{g})_{C} > (E_{g})_{S i} > (E_{g})_{G e}$
For given elements, the energy band gap of carbon is the maximum and of germanium is the least.
Hence option C is correct.

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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 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:

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?

Which of the following statements are true about metals ?

(a) Valence band overlaps with conduction band

(b) The gap between valence band and conduction band is negligible

(d) Valence band may remain partially filled

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.

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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.Which of the following statements is true?

The correct option is C (Eg)C>(Eg)Si>(Eg)GeFor given elements, the energy band gap of carbon is the maximum and of germanium is the least.Hence option C is correct.

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 $(E_{g})_{C}, (E_{g})_{S i}$ and $(E_{g})_{G e}$ .Which of the following statements is true?

The correct option is C $(E_{g})_{C} > (E_{g})_{S i} > (E_{g})_{G e}$
For given elements, the energy band gap of carbon is the maximum and of germanium is the least.
Hence option C is correct.