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The edge length of a face centered cubic cell of an ionic substance is 508 pm . If the radius of the cation is 110 pm , the radius of the anion is

Options

  1. A288 pm
  2. B398 pm
  3. C618 pm
  4. D144 pm

Correct answer

D. 144 pm

Step-by-step solution

For an ionic substance in FCC arrangement, aligned & 2 (r⁺+r⁻ )= edge length & 2 (110+r⁻ )=508 & r⁻=144 pm aligned

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