hafnium hs hassium he helium ho holmium h hydrogen in indium i iodine ir iridium fe iron kr krypton la lanthanum lr lawrencium pb lead li lithium lv livermorium lu lutetium mg magnesium mn manganese mt meitnerium md mendelevium hg mercury mo molybdenum mc moscovium nd neodymium ne neon np neptunium ni nickel...