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  • Elements which have  outermost electronic configuration are known as:

Elements which have ns^1 \: \: and \: \: ns^2 outermost electronic configuration are known as: : 

Option: 1

alkali metal 


Option: 2

alkaline metals 


Option: 3

both a and b 


Option: 4

chalcogens 


Answers (1)

best_answer

As we have learned

S- Block elements -

The elements of group 1 (alkali metal) and elements of group 2 (alkaline metal) which have ns1 and ns2 configuration belong to s-block elements.

The elements of group 1 and group 2 are known as alkali metals and alkaline earth metals respectively.

Therefore, Option(3) is correct

 

Posted by

vishal kumar

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