Question

A compound is formed by cation C and anion A. The anions form hexagonal close-packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is ______.

विकल्प

• C₂A₃

• C₃A₂

• C₃A₄

• C₄A₃

Answer 1

A compound is formed by cation C and anion A. The anions form hexagonal close-packed (hcp) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is `bbunderline(C_3A_4)`.

Explanation:

In hcp, number of octahedral voids = number of anions (A).

Given: cations (C) occupy 75% of octahedral voids.

Cations = 0.75 × (Number of A)

= `3/4  A`

The ratio of the compound is

C : A = 3 : 4

The formula of the compound is C₃A₄.