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mineralogy elements Ac Actinium

Ac - Actinium - METAL ACTINIDES

1047°
3197°
89
3
89
Ac
[Rn] 6d1 7s2
2
8
18
32
18
9
2
1.1
5.17
Synthetic
Radioactive
Liquid
Gaseous
Actinium Electronic configuration diagram
Electronic configuration diagram

Name Actinium
Number 89
Atomic 89
Symbol Ac
Fusion 1047
Boiling 3197
Density 10.07
Period 7
Group 3
Discovery 1899 Debierne/Giesel
Abundance 0.001
Radius 0
Electronegativity 1.1
Ionization 5.17
Number of isotopes 11
Electronic configuration [Rn] 6d1 7s2
Oxidation states 3
Electron by energy level 2,8,18,32,18,9,2