AIPMT PRELIMS2005Physics-Solid State Physics
AIPMT PRELIMS 2005 Physics Band Theory MCQ Question
Type: MCQ-conceptual-Medium-Class 12
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?
A
(Eg)C > (Eg)Si
B
(Eg)C = (Eg)Si
C
(Eg)C < (Eg)Ge
D
(Eg)C < (Eg)Si
Correct Answer
Option A
Detailed Explanation
Carbon has the largest band gap due to its strong covalent bonding, followed by silicon and germanium. Thus, (Eg)C > (Eg)Si > (Eg)Ge.
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