Al (Atomic mass =27) crystallises in a cubic system with edge length (a) equal to `4Å` its density is `2.7 g cm^(-3)` Calculate the number of aluminiu

Question

Al (Atomic mass =27) crystallises in a cubic system with edge length (a) equal to `4Å` its density is `2.7 g cm^(-3)` Calculate the number of aluminiu

Al (Atomic mass =27) crystallises in a cubic system with edge length (a) equal to `4Å` its density is `2.7 g cm^(-3)` Calculate the number of aluminium atoms present per unit cell

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Density `(rho)=(ZxxM)/(N_(0)xxa^(3))`
`2.7=(Zxx27)/(6.022xx10^(23)xx(4)^(3)xx(10^(-24)))`
`Z=(2.7xx6.022xx10^(23)xx(4)^(3)xx(10^(-24)))/27=4`

4 views Answered 2023-02-05 15:29