Question

21. Electronic configuration of four elements are given in the table. Arrange these elements in the increasing order of their electronegativity. Give reason. Elements Electronic configuration Na 2, 8, 1 S 2, 8, 6 Al 2, 8, 3 K 2, 8, 8, 1
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Answer 1

Answer:

Potassium < Sodium < Aluminium < Sulphur

In the periodic table the electronegativity , decreases on going downwards. Therefore - the increasing order is Potassium < Sodium < Aluminium < Sulphur