Hydrogen

Nonmetal

Symbol: H

Atomic Number: 1

Standard State: Gas

Atomic Mass: 1.008

Electron Configuration: 1s1

Electronegativity: 2.2

Atomic Radius: 120

Ionization Energy: 13.598

Melting Point: 13.81

Boiling Point: 20.28

Density: 8.99E-05

Year Discovered: 1766