A binary solid ( A + B - ) has zinc blende structure with B - ions constituting the lattice and A + ions occupying 25% tetrahderal holes. The formula of solid is

Question

A binary solid ( A + B - ) has zinc blende structure with B - ions constituting the lattice and A + ions occupying 25% tetrahderal holes. The formula of solid is, AB, A 2 B, A B 2, A B 4

MARKS App · Accepted Answer

Suppose number of B - ions = N So number of tetrahedral holes = 2 N As 25% tetrahedral holes are occupied by A + ions. So number of A + ions = 2 N 4 = N 2 So ratio of A + : B - = N 2 : N 1:2 So the formula is A B 2

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