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JEE Main levelNumerical answerDifficulty 2 of 3ss082

The radius of an anion is $146 pm$ . Taking $r_{void} / r_{anion} = 0.225$ for a tetrahedral void in close packing, find the radius of the void in pm (nearest integer).

Numerical answer type, answer in pm, tolerance 0.5.

Answer: 33 pm

r_{void} = 0.225 \times 146 = 32.85 pm \approx 33 pm

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