Two elements X and Y (atomic mass of X=75u,Y=16u) combine to give a compound that has 76% of X. The formula of the compound is:
A
XY
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B
X2Y
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C
X2Y2
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D
X2Y3
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Solution
The correct option is DX2Y3 Calculation of the empirical formula of the compound: Element% in compoundAtomic massNo. of molesSimple ratioSimple whole numberX76757675=1.011.011.01=11×2=2Y24162416=1.511.511.01=1.51.5×2=3 So, the empirical formula will be X2Y3