500
hydrogen, helium,lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium, gold,magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, argon, potassium, calcium, scandium, titanium, vanadium, chromium, iron, cobalt, nickel, copper zinc, gallium, germanium, arsenic, selenium, bromine, krypton, tin , iridium, platinum, gold, mercury, thallium, lead, uranium, neptunium, plutonium
Name 8 different elements on the periodic table.