Two oxides of a non-metal X contain 50% and 40% of non -metal respectively. If the formula of the first oxide is `XO_2`, then the formula of second oxide is

Options

A. `X_(2)O_(2)`
B. `X_(2)O_(5)`
C. `XO_(3)`
D. `X_(2)O`

Answer

C

Explanation

Given
Formula of first oxide is `XO_(2)` means one mole of `X = 2` mole of oxygen in the first oxide for second Oxide
40% of (X) , we have 60% of oxygen . For 40% of (X) , We have ` 2 xx 60%` of oxygen.
`:.` For 100% of (X) (i.e., one mole) we have,
`(2 xx 60)/(40) = 3` moles of oxygen
`:. ` Formula of second-oxide is `= XO_(3)` .