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Q.

What is the valency of silicon?

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a

2

b

1

c

3

d

4

answer is C.

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Detailed Solution

Valency is the combining power of atoms of an element with other atoms to form a molecule.
For Silicon,
Atomic Number = 14
Electronic configuration = (2,8,4)
Silicon needs 4 electrons to complete its outermost orbit/shell, so the valency of silicon is 4.
 

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