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Two elements X (atomic weight = 75) and ...

Two elements X (atomic weight = 75) and Y (atomic weight = 16) combine to give a compound having 75.8% of X. The compound is :

A

XY

B

`X_2Y`

C

`X_2Y_2`

D

`X_2Y_3`

Text Solution

Verified by Experts

The correct Answer is:
D
Relative no. of atoms of `X = (75.8)/(75) = 1.01`
Relative no. of atoms of `Y = (24.2)/(16) = 1.51`
Ratio of atoms of X and Y
1.01 : 1.51 or 2 : 3
` therefore ` Formula of the compound `X_2Y_3`
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