The correct order of decreasing electronegativity values among the elements I-beryllium II-oxygen, III-nitrogen and IV-magnesium is :
A
II > III > I > IV
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B
III > IV > II > I
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C
I > II > III > IV
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D
I > II > IV > III
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E
II > III > IV > I
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Solution
The correct option is A II > III > I > IV
Electronegativity increases along a period and decreases in a group. Thus, the order is (II) > (III) > (I) > (IV). Electronegativity of 0- 3. 5, N -3.0, Be -1. 5, Mg -1.2 .