Question
Easy
Solving time: 2 mins
Carbon, silicon and germanium have four valence electrons each. At room temperature, which one of the following statements is most appropriate?
(a) The number of free conduction electrons is significant in but small in and Ge
(b) The number of free conduction electrons is negligibly small in all the three
(c) The number of free electrons for conduction is significant in all the three
(d) The number of free electrons for conduction is significant only in Si and Ge but small is
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The number of free electrons for conduction is significant only in Si and Ge but small in C, as is an impurity.
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Question Text | Carbon, silicon and germanium have four valence electrons each. At room temperature, which one of the following statements is most appropriate? (a) The number of free conduction electrons is significant in but small in and Ge (b) The number of free conduction electrons is negligibly small in all the three (c) The number of free electrons for conduction is significant in all the three (d) The number of free electrons for conduction is significant only in Si and Ge but small is |
Topic | Semiconductor Electronics: Materials, Devices and Simple Circuits |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 |
Upvotes | 20 |