| ⇦ | 
| ⇨ |
C and Si both have same lattice strcture, having 4 bonding electron in each. However, C is insulator whereas Si is intrinsic semiconductor. This is because:
Options
(a) In case of V the valence band is not completely filled at absolute zero temperature.
(b) In case of C the conduction band is partly filled even at absolute zero temperature.
(c) 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.
(d) The four bonding electrons in the case of C lie in the third orbit, whereas for Si they lie in the fourth orbit.
Correct Answer:
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.
Explanation:
Electronic configuration of ⁶C = 1s², 2s², 2p²
The electronic condiguration of ¹⁴Si = 1s², 2s², 2p⁶, 3s², 3p²
As they are away from nucleus, so effectg of nucleus is low for Si even for Sn and Pb are most mettalic.
Related Questions: - If ∆U and ∆W represent the increase in internal energy and work done by the system
- The electric field in a certain region is given by E=5i ̂-3ĵ kV/m. The potential
- Two rigid bodies A and B rotate with rotational kinetic energies Eᴀ and Eʙ
- A particle moves along a circle of radius 20/π m with constant tangential acceleration
- An alternating electric field, of frequency v, is applied across the dees (radius = R)
Topics: Electronic Devices
(124)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If ∆U and ∆W represent the increase in internal energy and work done by the system
- The electric field in a certain region is given by E=5i ̂-3ĵ kV/m. The potential
- Two rigid bodies A and B rotate with rotational kinetic energies Eᴀ and Eʙ
- A particle moves along a circle of radius 20/π m with constant tangential acceleration
- An alternating electric field, of frequency v, is applied across the dees (radius = R)
Topics: Electronic Devices (124)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply