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Chemistry Solid State General Single Correct MCQ

Published on: August 14, 2026

If x = radius of Na + & y = radius of Cl – & a is the unit cell edge length for NaCl crystal, then which of the given relation is correct?

x + y = a

2x + 2y = a

x + y = 2a

x + y =

Text Solution

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The correct answer is:

2 (r + + r – ) = a

or r + = x = radius of Na +

2 (x + y) = a

or r – = y = radius of Cl –

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