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Which of the following expressions is co...

Which of the following expressions is correct in the case of a sodium chloride unit cell (edge length, `a`)?

A

`r_(o+) + r_(ɵ) = a`

B

`r_(o+) + r_(ɵ) = a//2`

C

`r_(o+) + r_(ɵ) = 2a`

D

`r_(o+) + r_(ɵ) = sqrt2a`

Text Solution

Verified by Experts

The correct Answer is:
B
`r_(o+) + r_(ɵ) = a//2`
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