Actinium

Ac
Actinium
Transition Metal

 

Atomic number:
 89
Atomic weight:
 (277.0278)
Shells:
 2,8,18,32,18,9,2
Orbitals:
 [Rn] 6d1 7s2
Melting point:
 1050°C
Boiling point:
 3200°C (±300°C)
Covalent radius:
 --
Å
Atomic volume:
 22.54
cm³/mol
Atomic radius:
 --
Å
Ionic radius:
 --
Å
Electronegativity:
 1.1
Oxidation states:
 
1st ionization pot.:
 5.17
V
2nd ionization pot.:
 12.126
V
3rd ionization pot.:
 --
V
Specific heat:
 --
J/gK
Heat of fusion:
 --
kJ/mol
Heat of vapor.:
 --
kJ/mol
Thermal conduct.:
 0.12
W/cmK
Electrical conduct.:
 --
10^6/cm ohm
Density:
 10.07
g/cm³
Valence:
 --