An element that has a low first ionization energy and good conductivity of heat and electricity is classified as a

(1) metal (3) nonmetal

(2) metalloid (4) noble gas

(1) Metal

All metals ionize easily, ex. Sodium forms Na + easily as it has a very low first ionization energy, and all metals easily conduct electricity as they are very good at ionization and can thus move electrons from one atom to another.