Question

What element has six valence electrons in each of its atoms in the ground state?

Answer 1

Well, it depends...

Explanation:

If you are talking about elements with a neutral charge, i.e. just usual elements and not ions whatsoever, then we have five elements who match the criteria. They are oxygen `(O)`, sulfur `(S)`, selenium `(Se)`, tellurium `(Te)`, and polonium `(Po)`. Note that the synthetic element livermorium (element number `116`) is also predicted to have six valence electrons, but it's not proven yet.

These elements all belong in group `16` or the chalcogens group.