Density of Li crystal is 0.53 g// ...

Density of Li crystal is `0.53 g// cm^(3)`. The edge length of Li unit -call is ` 3.5Å` . Find out the number of Li atoms in a unit cell .`(N_(A)=6.0 xx 10^(23) "mol"^(-1) , M = 6.94 g "mol"^(-1))`

527 pm

264 pm

154 pm

352 pm

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