Which of the following statements is not corr | vedclass

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(B) Let us analyze each statement:$A$. Ionic mobility depends on the hydrated radius. $Na^{+}$ has a smaller charge-to-size ratio than $Mg^{2+}$,so it

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The $EA$ of '$F$' atom is more than '$Cl$' atom

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(B) Let us analyze each statement:$A$. Ionic mobility depends on the hydrated radius. $Na^{+}$ has a smaller charge-to-size ratio than $Mg^{2+}$,so it is less hydrated and has higher mobility. This is correct.$B$. The electron affinity $(EA)$ of $Cl$ is greater than $F$ due to the small size and high inter-electronic repulsion in the $2p$ subshell of $F$. Thus,the statement that $EA$ of $F$ is more than $Cl$ is incorrect.$C$. The electronic configuration of $B^{+}$ is $1s^2 2s^2$ and $C^{+}$ is $1s^2 2s^2 2p^1$. Removing an electron from the stable $2s^2$ configuration of $B^{+}$ requires more energy than from $C^{+}$. This is correct.$D$. $IE$ of $O^{-}$ is less than $O$ because $O^{-}$ is an anion,and removing an electron from a negatively charged species is easier than from a neutral atom. This is correct.Therefore,the incorrect statement is $B$.

Which of the following statements is not correct?

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