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Valency

Metalloid wil...

Question

Metalloid will be out of elements with atomic number 13, 14, 15, 16 :

A

13

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B

14

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C

15

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D

16

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Solution

The correct option is B 14
Elements with atomic number 13, 14, 15 and 16 belong to 3rd period.
The value of P + 1 is $3 + 1 = 4$ .

The element with atomic number 14 is silicon.

Si have 4 valence electron. Therefore N = 4.

Here, $P + 1 = N$
Hence, $S i$ is a metalloid.

Option $(B)$ is correct.

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