Question

Find the valency of Atomic number 16, 6 and 20.class 9

Answer 1

Answer:

16 -> -2

6 -> -4 or +4

20 -> +2

Explanation:

Answer 2

Atomic number = 16

Electronic configuration is 2,8,6

Valency = It will gain 2 electron.

Atomic number = 6

Electronic configuration = 2,4

Valency = It will share 4 electron.

Atomic number = 20

Electronic configuration = 2,8,8,2

Valency = It will lose 2 electron.