I think that it is D because the higher the molecular mass, the higher it's boiling point. I hope that helped:) Bye!
Answer:
Fr
Explanation:
Francium (Fr) has the lowest ionization energy, with a value of 4.0727eV. This ionization energy increases as one advances in a period, being greater in the group of nonmetals.
Answer:
3) an applied electric current
Explanation:
An electric source is used in an electrolytic cell.