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Ionization Enthalpy

A solid compo...

Question

A solid compound XY has NaCl structure . If the radius of cation is 100pm the radius of anion will be

275.1

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322.5

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241.5

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165.7

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Solution

The correct option is C 241.5
Radius ratio = $r^{+}$ / $r^{-}$ = 0.414

100/ $r^{-}$ = 0.414

$r B^{-}$ =100/0.414

= 241 pm

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