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NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

1 Easy

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Application +4 | -1

Two elements

X

and

Y

have following electronic configurations

X=1 s^2, 2 s^2 2 p^6, 3 s^2 3 p^6, 4 s^2

and

Y=1 s^2, 2 s^2 2 p^6, 3 s^2 3 p^5

. The expected compound formed by combination of

X

and

Y

View answer and explanation

Correct option: A

X Y_2

Option A (

X Y_2

) is correct because X has 2 valence electrons and Y needs 1 electron to complete its octet, so X forms a +2 ion and Y forms a -1 ion, leading to the formula XY2.

NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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