Actinium

10
227
[Rn] 6d17s2
227Ac
7
d
89
2, 8, 18, 32, 18, 9, 2
498.83
Ac
10
1050°C, 1922°F, 1323 K
3200°C, 5792°F, 3473 K
Andrew Debierne
1899
7440-34-8
22404
More Information
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Atomic Data

Atomic Radiues, Non-bonded (A): 2.47
Electron Affinity (kJ mol-1): 33.77
Covalent Radiues (A): 2.01
Electronegativity (Pauling Scale): 1.1
Ionisation Energies (kJ mol-1) 1st 2nd 3rd 4th 5th 6th 7th 8th
498.83 1133.7 - - - - - -

Oxidation States and Isotopes

Common oxidation states 3
Isotope Atomic Mass Natural Abundance Half Life Mode of Decay
227Ac 227.028 - 21.77 y β-
- α

Supply Risk

Relative Supply Risk: Unknown
Crustal Abundance (ppm): 0.00000000055
Recycle Rate (%): Unknown
Production Conc.(%) : Unknown
Top 3 Producers:
Unknown
Top 3 Reserve Holders:
Unknown
Substitutability: Unknown
Political Stability of Top Producer: Unknown
Political Stability of Top Reserve Holder: Unknown

Pressure and Temperature Data

Specific Heat Capacity: 120
Shear Modulus: Unknown
Young Modulus: Unknown
Bulk Modulus: Unknown
Pressure 400k Pressure 600k Pressure 800k Pressure 1000k Pressure 1200k Pressure 1400k Pressure 1600k Pressure 1800k Pressure 2000k Pressure 2200k Pressure 2400k
- - - - - - - - - - Unknown