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Question

Chemistry Question on trends in periodic table

The correct order of decreasing electronegativity values among the elements Iberyllium,IIoxygen,IIInitrogenI-beryllium, II-oxygen, III-nitrogen and IVmagnesiumIV-magnesium, is

A

(II) > (III) > (I) > (IV)

B

(III) > (IV) > (II) > (I)

C

(I) > (II) > (III) > (IV)

D

(I) > (II) > (IV) > (III)

Answer

(II) > (III) > (I) > (IV)

Explanation

Solution

Electronegativity increases along a period and decreases in a group.
Thus, the order is (II)>(III)>(I)>(IV)(II) > (III) > (I) > (IV). Electronegativity of 03.5,N3.0,Be1.5,Mg1.20 - 3. 5, N -3.0, Be - 1. 5, Mg - 1.2 .