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How many unit cells are present in a cub...

How many unit cells are present in a cube-shaped crystal of NaCl of mass 1.00g?

A

`2.57xx10^(21)` unit cells

B

`5.14xx10^(21)` unit cells

C

`1.28xx10^(21)` unit cells

D

`1.71xx10^(21)` unit cells

Text Solution

Verified by Experts

The correct Answer is:
1
`58.5grArr"N"` formula units
`1grarr(N)/(58.5)` formula units
(b) 4 formula units `rarr` 1 unit cell
`(N)/(58.5)rarr(N)/(58.xx4)1"unit cell"=(6xx10^(23))/(234)`
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