A metal crystallises in FCC lattice. If edge length of the cell is `4xx10^(-8)` cm and density is `10.5 g cm^(-3)` then the atomic mass of metal is
A metal crystallises in FCC lattice. If edge length of the cell is `4xx10^(-8)` cm and density is `10.5 g cm^(-3)` then the atomic mass of metal is
A. 101.2
B. 50.6
C. 202.3
D. None
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Correct Answer - A
`d=(ZxxM)/(N_(A)xxa^(3))`
`"In FCC"toZ=4`
`10.5=(4xxM)/(6xx10^(23)xx(4xx10^(-8))^(3))`
`M=101.2`
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