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The arrangement of X - ions around A + ion in solid AX is given in the figure (not drawn to scale). If the radius of X - is 250 pm , the radius of A + is

Options

  1. A104 pm
  2. B125 pm
  3. C183 pm
  4. D57 pm

Correct answer

A. 104 pm

Step-by-step solution

r A + r x - = 0.414 = r A + 250 r A + = 0 . 414 × 25 0 pm = 10 4 pm

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