Match the atomic numbers 4, 14, 8, 15, and 19 with a solid non-metal of valency 3.

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Solution

The correct option is C 15
Atomic no. $15$ is phosphorus with configuration of $2, 8, 5$ so it need three more electron to complete octet and have valency of three. P is solid non metal.

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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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