Which elements of the periodic table react violently with water?
The Rare Alkali metals, AKA Family 1A on the periodic table. The farther over to the left of the periodic table, the lower the Ionization energy, which is the energy needed to make a substance lose an electron. Also, the farther down the substance is, the more likely it is to lose an electron, and it has a lower ionization energy than the substance above it.
