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Lithium has a bcc structure. Its density...

Lithium has a bcc structure. Its density is `530 "kg m"^(-3)` and its atomic mass is `6.94 "g mol"^(-1)`. Calculate the edge length of the unit cell of lithium metal `(N_A = 6.022 xx 10^23 "mol"^(-1))`

A

527 pm

B

264 pm

C

154 pm

D

352 pm

Text Solution

Verified by Experts

The correct Answer is:
D
`a^3 = (Z xx M)/(N_A xx d) = (2 xx 6.94)/(6.02 xx 10^(23) xx 0.53)`
a = 352 pm
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