Question

difference between
group 1a and 2a elements

Answer 1

These elements are known as Group 1A metals or alkali metals. Allelements in the second column of the Periodic Table have 2 valence electrons in an s orbital. Theseelements are known as Group 2A metals or alkaline earth metals.
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Answer 2

Explanation:

1st A group. hydrogen,li,Na,K,Rb,Cs,Fr. 2 ndA group. Be,Mg,Ca,Sr,Ba,Ra these are the elements in