28183232182
Category
Transition metal
Relative atomic mass
269.1087
Density
13.51
Melting point (°C)
1342
Boiling point (°C)
3100
Electronegativity (Pauling)
1.28
Half-life
28 s
Discovery year
1949
Discovered by
Electrons: 112
Protons: 112
Neutrons: 173
Decay chain