Actinium (Ac) in the periodic table — PeriodicTable

Actinium (Ac) in the periodic tableActinium is element 89, an actinoid of the f block, in period 7. Its ground-state configuration is [Rn] 6d1 7s2, and it usually shows the oxidation states 0, 3.It was discovered in 1899, by Debierne.Name origin: the Greek aktis, 'ray'. Blank rows are columns the sheet does not measure for this element.

Property

Value

Unit

Atomic weight

227

Da

Electronegativity

1.1

First ionisation energy

499

kJ/mol

Melting point

1323

K

Boiling point

3471

K

Density

10.07

g/cm³

Abundance

0

mg/kg

The periodic table, read every way a chemistry course asks for. This tool needs JavaScript; these are the pages it offers:

Periodic table — every property, plotted and coloured

Periodic table coloured by any property

Plot a property against atomic number

Plot one element property against another

Electron filling and configuration of every element

Isotopes and isotopic pattern of every element

Element data sheet — every property of every element

About — where the element data comes from

Our other tools

learn.cheminfo.org

inchi.cheminfo.org

vcl.cheminfo.org

smiles.cheminfo.org

iupac-name.cheminfo.org

openbabel.cheminfo.org

www.chemcalc.org

dbe.cheminfo.org

metabo.nmrium.com

derepflow.cheminfo.org

surge.cheminfo.org

tex.cheminfo.org

lcao.cheminfo.org

regexp.cheminfo.org

pdb.cheminfo.org

elucidation.cheminfo.org

equilibrium.cheminfo.org

polycarp.cheminfo.org

3d.cheminfo.org

database.cheminfo.org

symmetry.cheminfo.org

osiris.cheminfo.org

atoms.cheminfo.org

moles.cheminfo.org

inorganic.cheminfo.org

powerpoint.cheminfo.org