1.

Electron affinity of oxygen is less negative than sulphur. Justify this statement.

Answer»

Solution :When an electron is added to oxygen, the added electron goes to the .L. SHELL (n=2). As the .L. shell POSSESS smaller region of space, the added electron feels SIGNIFICANT repulsion from the other ELECTRONS present in this level.
E.A of O=-141 KJ `mol e^(-1)`
E.A of S=-200 KJ `mol e^(-1)`.


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