Which of the following has the largest ionic | vedclass

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Question

(B) The ionic radius increases as we move down a group in the periodic table due to the addition of new electron shells. $Na^{+}$ and $Mg^{2+}$ belong

Vedclass · Accepted Answer

$Cs^{+}$

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(B) The ionic radius increases as we move down a group in the periodic table due to the addition of new electron shells. $Na^{+}$ and $Mg^{2+}$ belong to the $3^{rd}$ period,while $Ca^{2+}$ belongs to the $4^{th}$ period and $Cs^{+}$ belongs to the $6^{th}$ period. Since $Cs^{+}$ has the highest number of electron shells (principal quantum number $n=6$),it has the largest ionic radius among the given options.

Which of the following has the largest ionic radius?

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