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Q.

Formula of a compound is X2Y3 . Predict the position of elements X and Y in the modern periodic table

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a

X=13th group ; Y=16th group

b

X=16th group ; Y=15th group

c

X=16th group ; Y=13th group

d

X=14th group ; Y=15th group

answer is D.

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Detailed Solution

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X can have five or three valence electrons; X can be 13th or 15th group element; Y can have six or two valence electrons; Y can be 12th or 16th group element; But from the formula it is evident that Y is more electronegative; It must be a 16th group element        

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