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Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryClassification of Elements and Periodicity in Properties1 Mark
Question
Which has the largest ionic radius among $\mathrm{Ca}^{2+}, \mathrm{Mg}^{2+}, \mathrm{Ba}^{2+}$?
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Answer

$\mathrm{Ba}^{2+}$ due to greater number of shells.

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