A Solid AB Has The NaCI Structure. If Radius Of Cation A+ is 120 Pm, The Maximum Possible Value Of The Radius Of The Anion B- is

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Question

A solid AB has the NaCI structure. If radius of cation A⁺ is 120 pm, the maximum possible value of the radius of the anion B^- is

easy

Solution

Correct option is

290 pm

For NaCI crystal

Radius of cation / radius of anion = 0.414

= 290 pm

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