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If the molar mass of AB is 100g "mol"^(-...

If the molar mass of AB is 100g `"mol"^(-1)` and 'a' is edge length then the density of the crystal will be for FCC cubic unit cell

A

`(4N_(A))/(a^(3)xx100)`

B

`(4xx100)/(a^(3)N_(A))`

C

`(2N_(A))/(a^(3)100)`

D

`(2xx100)/(a^(3)N_(A))`

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