A compound MpXq has cubic close packing (ccp) arrangement of X. Its unit cell structure is shown below. The empirical formula of the compound is

Engineering

Chemistry

Empirical Formula

Question

A compound M_pX_q has cubic close packing (ccp) arrangement of X. Its unit cell structure is shown below. The empirical formula of the compound is

M₅X₁₄

MX₂

M₂X

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Face centre = × = 4

For M,

edge centre = $\frac{1}{4} \times 4 = 1$

centre = 1

M₂X₄

i.e. MX₂