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Question

Chemistry Question on Classification of elements & periodicity in properties

Arrange F, Cl, O, N in the decreasing order of electronegativity-

A

O > F > N > Cl

B

F > N > Cl > O

C

Cl > F > N > O

D

F > O > N \approx Cl

Answer

F > O > N \approx Cl

Explanation

Solution

Electronegativity(E.N) of elements are; F=4,Cl=3,N=3,O=3.5F =4, Cl =3, N =3, O =3.5. Therefore, the trend is : F>O>N=ClF > O > N = Cl. This can be explained as, on moving from left to right across a period, the E.N increases and also on moving down a group from top to bottom the E.N decreases.