Between Mg and Mg^{2+},which has a smaller si | vedclass

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(B) $Mg^{2+}$ has a smaller size than $Mg$. This is because $Mg^{2+}$ is a cation formed by the loss of two electrons from the neutral $Mg$ atom. As t

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$Mg^{2+}$

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(B) $Mg^{2+}$ has a smaller size than $Mg$. This is because $Mg^{2+}$ is a cation formed by the loss of two electrons from the neutral $Mg$ atom. As the number of electrons decreases while the nuclear charge remains the same,the effective nuclear charge per electron increases,causing the remaining electrons to be pulled more strongly towards the nucleus,resulting in a smaller ionic radius.

Between $Mg$ and $Mg^{2+}$,which has a smaller size? Why?

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