A solid XY has NaCl structure. If radius of X + is 100 pm. What is the radius of Y - ion:

Question

A solid XY has NaCl structure. If radius of X + is 100 pm. What is the radius of Y - ion:, 120 pm, 136.6 to 241.6 pm, 136.6 pm, 241.6 pm

MARKS App · Accepted Answer

For NaCl like structure. The radius ratio should be ⇒ 0.414 → 0.732 r + r - = 100 r m a x - = 0.414 ; 100 r m i n - = 0.732 ; ∴ r m a x - = 100 0.414 = 241.3 P m ; ∴ r m i n - = 100 0.732 = 136.6 P m ;

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