1.

Assertion: In NaCl structure, the inter ionic distance is a//2. ( a Unit cell edge length ). Reason : NaCl forms face centered cubic unit cell.

Answer»

Both ASSERTION and reason are TRUE and reason is the correct EXPLANATION of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false
Both assertion and reason are false.

Answer :B


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