Which of the following elements has the lowes | vedclass

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(A) The ionization energy trend for Group $14$ elements is as follows:$C > Si > Ge > Sn > Pb$.However,due to the poor shielding effect of $d$ and $f$

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$Pb$

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(A) The ionization energy trend for Group $14$ elements is as follows:$C > Si > Ge > Sn > Pb$.However,due to the poor shielding effect of $d$ and $f$ orbitals (lanthanide contraction),the effective nuclear charge increases for $Pb$,making its $IE_1$ slightly higher than $Sn$ in some contexts,but generally,the trend decreases down the group. Among the given options,$Pb$ has the lowest ionization energy due to its large atomic size.

Which of the following elements has the lowest $IE_1$ value?

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