Shade all the elements for which the neutral atom has a valence electron configuration of ns2np6 , where n stands for an integer.

The elements for which the neutral atom has a valence electron configuration of .



are those whose valence electron shell has 2 + 6 = 8 electrons.

Those are the noble gases, except helium (He).

Here is the list of the noble gases and the configuration of their valence electron configuration:

He:    

Ne     

Ar      

Kr      

Xe      

Rn     

Ne, Ar, Kr, Xe and Rn

A. 17 hope this dudet