Hydrogen
(H)
400
1
H
Category
Nonmetal
Relative atomic mass
1.0079
Density
0.0899
Melting point (°C)
-259.3
Boiling point (°C)
-252.9
Electronegativity (Pauling)
2.1
Discovery year
1766
Discovered by
Electrons: 1
Protons: 1
Neutrons: 0
created by @lukaswyss
Hydrogen (H) – Element 1