Which one of the following is the biggest ion | vedclass

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Question

(B) The ionic radius of cations increases as we move down a group in the periodic table due to the addition of new electron shells.$Al^{3+}$,$Mg^{2+}$

Vedclass · Accepted Answer

$Ba^{2+}$

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(B) The ionic radius of cations increases as we move down a group in the periodic table due to the addition of new electron shells.$Al^{3+}$,$Mg^{2+}$,and $Na^{+}$ belong to the $3^{rd}$ period,while $Ba^{2+}$ belongs to the $6^{th}$ period.Since $Ba^{2+}$ is in the $6^{th}$ period,it has the largest number of shells among the given ions,making it the biggest ion.

Which one of the following is the biggest ion?

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