Question

What is the valency of:
a) fluorine in CaF2 b) sulphur in SF6
c) phosphorus in PH3 d) carbon in CH4

Answer 1

Fluorine = 1
Sulphur = 6
Phosphorous = 3
Carbon = 4

Answer 2

X. Y-------> X2Y3
3. 2

A) 1
B) 6
C)3
D)4