Actinium

Symbol AcAtomic number 89
Atomic mass
227.027
 Thermal conductivity
0.12
Atomic radius
...
 Covalent radius
...
Density
10.07
 Atomic volume
22.54
Melting point
1323
 Oxidation states
3
Boiling point
3473
 Stable isotopes
0
Heat of vapor.
...
 Electronegativity
1.1
Heat of fusion
...
 First ionization
...
Specific heat
...
 Electrical conduct.
...
Electron configuration

General descriptionNuclear data
 Index

Periodic Table

Chemistry concepts
 
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Actinium

Actinium is the heaviest member of group III. It is a radioactive element which occurs in minute quantities in uranium ores.

Atomic dataNuclear data
 Index

Periodic Table

Chemistry concepts

Reference
Pauling
Ch. 26,32
 
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Actinium Nuclear Data

Z
A
Atomic
Mass (u)
Nuclear
Mass(GeV/c2
Binding
Energy(MeV)
Spin
Natural
Abund.
Half-life
Decay
Q
MeV
89
225
225.023204
209.5640
1724.8
3/2
...
10.0d
a
5.94
89
227
227.027750
211.4312
1736.7
3/2
...
21.77y
b-,a
0.042,5.04
89
228
228.031014
212.3658
1741.8
3
...
6.13h
b-
2.14
89
231
231.038551
215.1673
1759.0
1/2
...
7.5m
b-
5.94
Atomic data
Index

Periodic Table

Chemistry concepts

Reference
Rohlf
 
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