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An element having atomic mass 60 amu. ha...

An element having atomic mass 60 amu. has fcc unit cell. The edge length of the unit cell is `4 xx 10^(2)` pm. Find the density of the unit cell.

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`d = (ZM)/(a^(3)N_(A))`
`d = (60 xx 4)/((400 xx 10^(-10))^(3) xx 6.022 xx 10^(23))`
d = 6.226 `g//cm^(3)`
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