Answer :
The most metallic element is Francium, and you can tell because it's the strongest metal when it comes to reacting with water. This is because its spare electron is further out than that of any other metal.
NOTE: All Francium is radioactive, apart from one form which is an isotope, so it instantly decays if made.
NOTE: All Francium is radioactive, apart from one form which is an isotope, so it instantly decays if made.
