A compound `M_(p)X_(q)` has cubic close packing `(ccp)` arrangement of `X`. Its unit cell structure is shown below. The empirical formula of the compound is

Options

A. MX
B. `MX_(2)`
C. `M_(2)X`
D. `M_(5)X_(14)`

Answer

B

Explanation

Number of atoms of (X) `=8xx(1)/(8)+6xx(1)/(2)=4`
Number of atoms of (M)`=4xx(1)/(4)+1=2`
`{:(M:X),(2:4),(1:2):}`
Empirical formula `=MX_(2)`