Which of the following metals does not exhibi | vedclass

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(B) The inert pair effect is the tendency of the two electrons in the outermost $s$-orbital to remain unshared in compounds of post-transition metals.

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Aluminium

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(B) The inert pair effect is the tendency of the two electrons in the outermost $s$-orbital to remain unshared in compounds of post-transition metals. This effect becomes more prominent as we move down the group in the $p$-block elements. $Aluminium$ $(Al)$ belongs to group $13$ and is the first member of the group. It does not exhibit the inert pair effect because it lacks the $d$ or $f$ orbitals that would shield the $s$-electrons from the nucleus,and it is too small to have a stable $+1$ oxidation state. Therefore,$Al$ typically shows a $+3$ oxidation state.

Which of the following metals does not exhibit the inert pair effect?

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