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Why is+2oxidiation state of lead more st...

Why is+2oxidiation state of lead more stable than +4 oxidation state?

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The valence shell electronic configuration of lead is `[Xe]4f^(144d ^(10)6s ^(2)6 p^(2)`. Normally, 6p electrons become availbale for the bond formation while 6s electrons because of greater penetraton in the nucleus remain quite inert (iner pair effect). They become available only under vigorous conditions. Thus +2 oxidation state is more stable tan +4 oxidation state.
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DINESH PUBLICATION-P BLOCK ELEMENTS (GROUP 13 AND 14 )-Concept based
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  2. What are methanides? Whichg as do they liberate on hydrolysis?

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