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Question

The simplest formula of a compound containing 50% of an element X (atomic mass = 10) and 50% of the element Y (atomic mass = 20) 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 B X2Y
Ans :B
Let mass of compound = 100 gm
Then mass of X = 50 gm
Then mass of Y = 50 gm
Mole of X = 5010 = 5
Mole of Y =5020 = 2.5
Molecular formula = X5Y2.5=X2Y


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