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If alpha is edge length of NaCl unit an...

If `alpha` is edge length of NaCl unit and `r_(Na)+r_(Cl^-)` are the radius of `Na^+` and `Cl^-` ions respectively , then

A

`r_(Na)+r_(Cl^-) =alpha`

B

`r_(Na)+r_(Cl^-) =alph asqrt3`

C

`r_(Na)+r_(Cl^-) =alpha/2`

D

`r_(Na)+r_(Cl^-) =2 alpha`

Text Solution

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The correct Answer is:
C
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