Home Modern › Forums › UPSEE › Ionisation energy in group 1A varies in the decreasing order as (a) Li > Na > K > Cs (b) Na > Li > K >Cs (c) Li > Cs > K > Na (d) K > Cs > Na > Li Ionisation energy in group 1A varies in the decreasing order as (a) Li > Na > K > Cs (b) Na > Li > K >Cs (c) Li > Cs > K > Na (d) K > Cs > Na > Li
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