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Three atoms P,Q and R crystallize in a ...

Three atoms P,Q and R crystallize in a cubic solid lattic having P atom at corners, Q atom at body centre and R atom at the face centre. Identify formula of the compound.

A

PQR

B

`PQR_(2)`

C

`PQR_(3)`

D

`P_(3)QR`

Text Solution

Verified by Experts

The correct Answer is:
C
No. of atoms of P` = 8 xx (1)/(8) =1 `
No. of atoms of Q `= 1 xx 1 = 1 `
No. of atoms of `R = 6 xx ( 1)/( 2) = 3 `
Hence, compound is `PQR_(3)`
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