Question

An element A is tetravalent and element B is divalent. The formula of the compound formed by the these two elements is
(a) A₂ B₄
(b) A₂ B
(c) AB₂
(d) AB

Answer 1

Answer:

Valency of A is 4. Valency of B is 2.

                   A⟶4

                        ×

                   B⟶2

          (Cross multiply)

             A2B4⟹AB2

Compound formed by the combination of A and Bis AB2.

Example :- CO2 (Carbon    dioxide).

Hence, the correct option is C