Question
Chemistry Question on trends in periodic table
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)
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). Electronegativity of 0−3.5,N−3.0,Be−1.5,Mg−1.2 .