Question

. In which of the following the valency of each of the constituent elements is equal to the total number of atoms in one molecule of the compound?

2 points

HCl

H2S

CaO

MgCl2

​

Answer 1

Answer:

mgcl2 bcz the valency of mg is 0 and cl is also 0

Explanation:

mg = 12

1s2 2s2 2p6 3s2

Answer 2

Answer:

hcl

Explanation:

b is correct answer