An element has a bcc structure with a celledge of `288` pm. The density of the element is `7.2 g cm^(-3)`. How many atins are present in `208 g` of the element?

Options

A. `6xx10^(23)`
B. `2.4xx10^(23)`
C. `24xx10^(23)`
D. `12xx10^(23)`

Answer

C

Explanation

`d=(ZxxM)/(a^(3)xxN)" " {:(Mto"mass of substance"),(Nto"No of atoms"):}`
`N=(2xx208)/((288xx10^(-10))^(3)xx7.2)`
`24xx10^(23)`