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An element with density 3gcm^(-3) forms ...

An element with density `3gcm^(-3)` forms a bcc lattice with edge length of `3times10^(-8)cm`. The molar mass of the element is : `(N_(A)=6times10^(23)mol^(-1))`
(a) `48.6gmol^(-1),`
(b) `24.3gmol^(-1)`
(c) `60gmol^(-1)`
(d) `56gmol^(-1)`

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