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r(Na^(+))= 195 pm and r(Cl^(-)) =281 pm ...

`r_(Na^(+))= 195 `pm and `r_(Cl^(-)) =281 `pm in NaCl ( rock salt ) structure. What is the shortest distance between `Na^(+)` ions ?

A

778.3 pm

B

673 .06 pm

C

195.7pm

D

390.3 pm

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The correct Answer is:
B
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