What is the fundamental difference between the electronic configuration of elements of group I A and group II A elements?

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Solution

The fundamental difference between the electronic configuration of elements of group I A and group II A elements is the valence electrons.
Group I elements have only one valence electron in their outermost shell.
Group II elements have two valence electrons in their outermost shell.

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Similar questions

(a) What is the fundamental difference in the electronic configurations between the group 1 and group 2 elements?

(b) On the basis of electronic configuration, how will you identify :

(i) chemically similar elements?

(ii) the first element of a period?

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