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The following is the correct increasing ...

The following is the correct increasing order of the ionic radii

A

`Li^(+) lt Mg^(2+) lt K^(+) lt Al^(3+)`

B

`Al^(3+) lt Li^(+) lt Mg^(2+) lt K^(+)`

C

`Al^(3+) lt Mg^(2+) lt K^(+) lt Li^(+)`

D

`K^(+) lt Al^(3+) lt Mg^(2+) lt Li^(+)`

Text Solution

Verified by Experts

The correct Answer is:
B
`Li^(+) rArr 60 p m`
`K^(+) rArr 133 p m`
`Mg^(2+) rArr 65 p m`
`Al^(3+) rArr 53.5 p m `
Hence, correct order of increasing ionic radii is
`Al^(3+) lt Li^(+) lt Mg^(2+) lt K^(+)`.
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