›› Physical and chemical properties of Actinium

Atomic Number:89
Element Symbol:Ac
Element Name:Actinium
Atomic Weight:227
Group Name:Actinoid
Period Number:7 (actinoid)
Ground State Configuration:[Rn] 6d 7s2
Ground State Level:2D3/2
Standard State:Solid
Bond Length:375.6
Atomic Radius Empirical:195
First Ionization Energy:499
Pauling Electronegativity:1.1
Allred Rochow Electronegativity:1.00
Density Of Solid:10070
Molar Volume:22.55
Melting Point:1050
Boiling Point:3300
Thermal Conductivity:12
Enthalpy Of Fusion:14
Enthalpy Of Vaporization:400
Enthalpy Of Atmization:406
Most Common Oxidation Numbers:3
Discovered By:Andre Debierne
Discovered At:France
Discovered When:1899
Origin Of Name:From the Greek word aktinos meaning ray

Calculate the molecular weight of Actinium or molecular weight Ac.

Also see the full list of chemical elements and atomic weights.

››Compounds that contain Actinium

Chromium(II) Acetate  Cr2(OAc)4(H2O)2