The decrease in stability of the higher oxida | vedclass

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(B) The phenomenon is known as the $inert \ pair \ effect$. As we move down a group in the $p-$block,the $ns^2$ electrons become increasingly reluctan

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energy required to unpair $ns^2$ electrons is not compensated by the energy released in forming the two additional bonds

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(B) The phenomenon is known as the $inert \ pair \ effect$. As we move down a group in the $p-$block,the $ns^2$ electrons become increasingly reluctant to participate in bonding due to poor shielding by $d$ and $f$ orbitals. The energy required to unpair these $ns^2$ electrons is not adequately compensated by the energy released during the formation of two additional bonds. Therefore,the lower oxidation state becomes more stable than the higher oxidation state.

The decrease in stability of the higher oxidation state in the $p-$block elements with an increasing atomic number is due to:

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