Ionic mobility of `Li^(+)` is less than `Na^(+) and K^(+)` because

Ionic mobility of `Li^(+)` is less than `Na^(+) and K^(+)` because
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Ionic mobility of `Li^(+)` is less than `Na^(+) and K^(+)` because A. ionisation potential of lithium is ... `Li^(+)` D. `Li^(+)` keeps two electrons.
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