Arrange the following in the increasing order of their energy band gap

(A) Si
(B) Ge
(C) C
(D) Sn

Choose the correct answer from the options given below:

(D), (B), (A), (C)

The correct answer is Option (2) → (D), (B), (A), (C)

Energy band gap refers to the energy difference between the valence band and the conduction band of a material.

Typical energy band gaps of the given elements are:

Sn (Tin): $E_g \approx 0.08$ eV (semimetal)

Ge (Germanium): $E_g \approx 0.66$ eV

Si (Silicon): $E_g \approx 1.1$ eV

C (Diamond): $E_g \approx 5.5$ eV

Increasing order of energy band gap:

Sn < Ge < Si < C