A compound contains three elements `A,B` and `C`, if the oxidation number of `A=+2B=+5` and `C=-2` then possible formula of the compound is

Options

A. `A_(3)(B_(4)C)_(2)`
B. `A_(3)(BC_(4))_(2)`
C. `A_(2)(BC_(3))_(2)`
D. `ABC_(2)`

Answer

B

Explanation

Sum of oxidation numbers of all atoms in a neutral molecule is zero.
`to A_(3)(B_(4)C):2xx3+2xx[4xx5-2]=42ne0`
`to A_(3)(BC_(4))_(2):+2xx3+2xx[+5-8]=0`
`to A_(2)(BC_(3))_(2):+2xx2+2xx[+5-6]=+2 ne0`
`to ABC_(2):+2+5+(-2)xx2=+3 ne0`