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Q.

A compound contains elements X and Y in 1 : 4 mass ratio. If the atomic masses of X and Y are in ratio 1 : 2, then empirical formula will be

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a

 XY

b

XY2         

c

X2Y

d

X4Y

answer is B.

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Detailed Solution

Gram atoms ratio=atoms ratio

no of gram atom=mass/mol wt   

XY
mM4m2M=2mM

Therefore, the empirical formula is XY2

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A compound contains elements X and Y in 1 : 4 mass ratio. If the atomic masses of X and Y are in ratio 1 : 2, then empirical formula will be