A element X with atomic mass 60 g/mol has a density of `6.23"g cm"^(-3)`. If the edge length of the unit cell is 400 pm, identify the type of the cubic unit cell. Calculate the radius of the atoms of the element.

Options

A. `250` g f
B. `280` g f
C. `350` g f
D. `300` g f

Answer

B

Explanation

Volume of packet = `("Mass")/("Density")`
`=(500g)/(1.43"g cm"^(-3))=349.65"cm"^(3)`
`:.` Upthrust = Volume of alcohol displaced `xx` Density = `349.65"cm"^(3)xx0.8"g cm"^(-3)=279.72=280` g f