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A crystal of lead (II) sulphide has N...

A crystal of lead (II) sulphide has NaCl strcuture . In this crystal the shorest distance between a `Pb^(2+)` ion and `S^(2-)` ion is 297 pm . What is the volume the of unit cell in lead sulphide ?

Text Solution

Verified by Experts

The correct Answer is:
1.81 Å
Edge 'a' of unit cell = 2 ` xx` Distance between` Pb^(2+) and S^(2-)` ions .
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