Question
Sun February 12, 2012 By: Chetan

What is inert pair effect?

Expert Reply
Sun February 12, 2012
 The inert pair effect is the tendency of the outermost s electrons to remain nonionized or unshared in compounds of post-transition metals. The term inert pair effect is often used in relation to the increasing stability of oxidation states that are 2 less than the group valency for the heavier elements of groups 13, 14, 15 and 16.
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