Question

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

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

(b) A gas of valency 2.

(c) A metal of valency 1.

(d) A non-metal of valency 4.

Answer 1

(a) A solid non-metal of valency 3. 15

(b) A gas of valency 2. 8

(c) A metal of valency 1. 19

(d) A non-metal of valency 4. 14