Match the atomic numbers 4, 14, 8, 15, and 19 with a non-metal of valency 4.

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Solution

The correct option is B 14
Atomic no. $14$ is silicon with configuration of $2, 8, 4$ so it need four more electron to complete octet and have valency of $4$ .

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Similar questions

Match the atomic number 4, 8, 14, 15 and 19 with each of the following:

(a) A solid non-metal of valency 3.

(b) A gas of valency 2.

(d) A non-metal of valency 4.

2, 4, 8, 15,

19

1

2, 4, 8, 15,

19

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