The number of tightly bound electrons in silicon atom are 14 10 6 4 Silicon has

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Question
The number of tightly bound electrons in silicon atom are
Options
A. 14
B. 10
C. 6
D. 4

Correct Answer

10

Explanation

Silicon has 14 electons and 4 valence electrons. The 10 electrons in the inner orbits are tightly bound.

Materials and Components problems

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1. A dielectric is subjected to alternating field. The dielectric losses are potential to
Options
A. real part of dielectric constant
B. imaginary part of dielectric constant
C. both real and imaginary parts of dielectric constant
D. either real or imaginary part of dielectric constant

5. Assertion (A): Diamond and carborudum are both very hard materials.
Reason (R): Valence band can be extremely strong.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A is false but R is true

7. An electron (charge -e) is rotating in a circular orbit of radius R, around a proton with charge +e at a constant angular velocity ?. The orbital magnetic dipole moment is
Options
A. 0.5 e? R²
B. e? R²
C. 2 e? R²
D. 0.5 e? R³

9. A circular sphere mile is the area of cross-section of a wire
Options
A. having a diameter equal to 1 miles
B. having a radius equal to 1 miles
C. having a circumference equal to 1 miles
D. none of the above

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