Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
15.4k views
in Solid State by (79.0k points)
recategorized by

The energy gaps (Eg ) between valence band and conduction band for diamond, silicon and germanium are in the order

(a) Eg (diamond) > Eg (silicon) > Eg (germanium)

(b) Eg (diamond) < Eg (silicon) < Eg (germanium)

(c) Eg (diamond) = Eg (silicon) : E(germanium)

(d) Eg (diamond) > Eg (germanium) > E(silicon).

1 Answer

+1 vote
by (50.7k points)
selected by
 
Best answer

Correct option (a) Eg (diamond) > Eg (silicon) > Eg (germanium)

Explanation:

Semiconductors are solids where there is only a small difference in energy, called a 'band gap', between the filled valence band of electrons and the conduction band.

Compound Energy gap (kJ mol-1)
Diamond 579
Silicon 106
Germanium  68

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

...