Hydrogen

Atomic Number: 1

Name: Hydrogen

Atomic symbol: H

Atomic Weight: 1.0079

Electron affinity: -73 kJ/mole

Electron configuration: 1s¹

Ionization energies: 1312 kJ/mole

Pauling electronegativity: 2.1

Melting Point: -259.14^oC

Boiling Point: -252.87^oC

Van Der Wall's radius: 1.2 angstroms

Ionic radius: 1.54 angstroms (-1)