1.

Ionic radius of alkali metals are in the following order

Answer»

`LiltNaltKltRbltCs`
`NaltLiltKltRbltCs`
`LigtNagtKgtRbgtCs`
`NaltLiltRbltKltCs`

Solution :Ionic RADII : On moving along the PERIOD is decreases andon moving down the GROUP is increases.


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