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In the distance between Na^(+) and CI^(-...

In the distance between `Na^(+)` and `CI^(-)` ions in sodium chliride crystal is X pm , the length of the edge of the unit cell is

A

4a pm

B

`(a)/(4)"pm"`

C

2a pm

D

`(a)/(2)"pm"`

Text Solution

Verified by Experts

The correct Answer is:
C
Length of the edge of NaCl unit cell,
`=2xx` distance between `Na^(+)` and `Cl^(-)`
`=2xxa=2a` pm
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