Asked by ?

Which element has 6 energy levels and 7 valence electrons?

Astatine (At)

Polonium (Po)

Seaborgium (Sg)

Rhenium (Re)
Answered by ?
my answer is D.
Answered by Anonymous
level 6 is from Cs to Rn
7 outer shell electrons is in the column under F and Cl (Halogens)
That is At