Solid StateEasy
Question
If the anions (A) form hexagonal closest packing and cations (C) occupy only 2/3 octahedral voids in it, then the general formula of the compound is :
Options
A.CA
B.CA2
C.C2A3
D.C3A2
Solution
for A, hcp packing so effective no = 6
for C, 6 × 2/3 = 4
A6C4 or A3C2
for C, 6 × 2/3 = 4
A6C4 or A3C2
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