X and Y are two elements which form oxides of type `XO_(3)" and "Y_(2)O_(5)` with highest oxygen content. Identify the group numbers to which X and y belongs

Options

A. 13, 15
B. 16, 15
C. 13, 17
D. 16, 17

Answer

B

Explanation

(i) Oxidation state of X in `XO_(3)=x+(-2 times 3)`
`" "=x-6`
`" "x=+6`
So, among the given options, +6 oxidation state belongs to oxygen family.
Group number of oxygen family = 16
(ii) Oxidation state of Y in `Y_(2)O_(5)=2x+(-2 times 5)`
`" "=2x-10 rArr x=10/2=+5`
So, among the given options, +5 oxidation state belongs to nitrogen family.
Group number of nitrogen family = 15