Question

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What do you mean by Inert pair effect ?
Explain properly .
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Answer 1

The resistance of ns electrons to participate in Bond formation is known as inert pair effect.

Ex ;; 3a group Tl+1 is more stable than Tl+3.
4a group pb+2 is greater than pb+4....

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Answer 2

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• The inert pair effect is the tendency of the two electrons in the outermost atomic s-orbital to remain unshared in compounds of post-transition metals. ... As a result, the inert pair of ns electrons remains more tightly held by the nucleus and hence participates less in bond formation.