Which element has 6 energy levels and 7 valence electrons?
Astatine (At)
Polonium (Po)
Seaborgium (Sg)
Rhenium (Re)
2 answers
my answer is D.
level 6 is from Cs to Rn
7 outer shell electrons is in the column under F and Cl (Halogens)
That is At
7 outer shell electrons is in the column under F and Cl (Halogens)
That is At