1.

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

Answer»

XY
`X_2Y`
`X_2Y_2`
`X_2Y_3`

Solution :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
1.01:1.51or2:3
` THEREFORE ` Formula of the compound `X_2Y_3`


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