1. Tardigrade
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  3. Chemistry
  4. Assertion The ionic size of Mg 2 + , > Al 3 + Reason In isoelectronic species, greater the nuclear charge, less is the size.

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Q. Assertion The ionic size of $Mg{ 2 + } , > Al^{ 3 + } $ Reason In isoelectronic species, greater the nuclear charge, less is the size.

Classification of Elements and Periodicity in Properties

Solution:

The ionic size of $Mg^{ 2 + } $ is larger than $ Al^{ 3 + } $Both the species are isoelectronic arid in case of isoelectronic species as nuclear charge increases,\, attraction force between electron of ultimate shell and nucleus increases which results in decrease in ionic size.