Question

Define valency of an element. What is the valency of:
(1) Aluminium in aluminium sulphate and
(2) Sodium in sodium sulphate?

Answer 1

the combining power of an element.

1) 3

2) 2

Answer 2

Dear Student,

◆ Valency -

• Valency is the combining capacity of an element.
• It is no of electrons the element can donate/accept/share with another entity.

(1) Aluminium in aluminium sulphate -

• Valency of Al in Al2(SO4)3 is +3.

(2) Sodium in sodium sulphate -

• Valency of Na in Na2SO4 is +1.

Thanks dear. Hope this helps you...