Question

N
20. The valency of iron in
FeO, Copper in CuCl and
Aluminium in AlN are
respectively -
(a) 1,1 and 1
(b) 2,1 and 1
(c) 1,2 and 3
(d) 2,1 and 3​

Answer 1

Answer:

(d) 2,1 and 3

Explanation:

In FeO the valency of O is -2 therefore valency of Fe wil be +2.

Similarly in CuCl the valency of Cl is -1 therefore the valency of Cu will be +1.

and in AlN the valency of N is -3 therefore the valency of Al will be +3.