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Grade 11Physical Chemistry

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? (a) (Eg)Si < (Eg)Ge < (Eg)C (b) (Eg)C < (Eg)Ge > (Eg)Si (c) (Eg)C > (Eg)Si > (Eg)Ge (d) (Eg)C = (Eg)Si = (Eg)Ge

Profile image of Jayant Kumar
12 Years agoGrade 11
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1 Answer

Profile image of Gaurav
11 Years ago
Hello Student
C is a non metal , so theenergy band gap would be highest for C and minimum for Ge which is a metalloid. . so the correct option is(c) (Eg)C > (Eg)Si > (Eg)Ge

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