Fluorine
Symbol: F Atomic Number: 9 Atomic Mass: 19 Valence Electrons: 7 Nonmetal Boiling Point: -188.12 C and -306.652 °F Melting Point: -219.67 C and -363.31598 °F Density: 1516 kg m-3 Physical State: Gas Discovered: 1886 Discovered By: Henri Moissan
