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Arrange the following ions in order of t...

Arrange the following ions in order of their decreasing ionic radii.
`Li^(o+), K^(o+), Mg^(2+), Al^(3+)`

Text Solution

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`Li^(+) lt Al^(3+) lt Mg^(2+) lt Na^(+) lt K^(+)`. More the effective nuclear charge, smaller the ion.
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