Question

The tetrahedral voids are present in 0.5 mole of hcp crystal structure.

(1) 3.6 × 1023

(2) 9 × 1023

(3) 3.6 × 1024

(4) 3 × 1022

Answer 1

Correct option (3) 3.6 × 1024

Explanation:

In HCP Z = 6

T V = 2Z = 12

TV ins 0.5 mol = 12 × 0.5 mol

= 6 NA = 6 × 6.02 × 1023

= 3.6 × 1024