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Class 12 NEET Physics Semiconductor Electronics Part 1
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Question : 9
Total: 100
C and Si both have same lattice structure, having 4 bonding electrons in each. However, C is insulator whereas Si is intrinsic semiconductor. This is because
(2012)
In case of C the valence band is not completely filled at absolute zero temperature.
In case of C the conduction band is partly filled even at absolute zero temperature.
The four bonding electrons in the case of C lie in the second orbit, whereas in the case of Si they lie in the third.
The four bonding electrons in the case of C lie in the third orbit, whereas for Si they lie in the fourth orbit.
Validate
Solution:
The electronic configuration of carbon
(
6
C
)
is
1
s
2
2
s
2
2
p
2
.The electronic configuration of silicon
(
14
S
i
)
is
1
s
2
2
s
2
2
p
6
3
s
2
3
p
2
Hence, the four bonding electrons of C and Si respectively lie in second and third orbit.
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