The concept of oxidation number (O.N) is very important in under standing redox reaction s it helps to identify the oxidant / reductant in a redox reaction it also helps to (i) find oiut the possible molecular formula of any neutral compound and (ii) to balance redox reaction
A compound contains atoms of three elements A b and c if the oxidation umber of A is + 2 B is +5 and that of C is -2 the possible formula of the compund is

Options

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

Answer

a

Explanation

Sum of oxidation number of all the elements in the M.F of any compound is zero putting the O.N of all the elements in the M.F of all the compunds we find that in M.F `A_(3)(BC_(4))_(2)` the sum of O.N of all the elements comes out to zero
`3xx(+2)+2xx(+5+4xx-2)=0`
Thus option (a) is correct