ocr: Element Hydrogen Hydrogen Symbol H Helium Atomic Number 1 Lithium Atomic Weight 1.01 Beryllium Melting point (°C) -259.19 Melting point (K) 13.96 Boron Boiling point (°C) -252.69 Carbon Boiling point (K) 20.46 Nitrogen Density (kg/m3) 71 Oxygen Heat vapour(kJ/mol) 0.45 Fluorine Find: Prev Next 1/106 Neon
