Promethium

Symbol PmAtomic number 61
Atomic mass
145
 Thermal conductivity
0.179
Atomic radius
2.62
 Covalent radius
1.63
Density
6.475
 Atomic volume
22.39
Melting point
1350
 Oxidation states
3
Boiling point
2733
 Stable isotopes
0
Heat of vapor.
...
 Electronegativity
1.13
Heat of fusion
...
 First ionization
5.554
Specific heat
...
 Electrical conduct.
...
Electron configuration

General descriptionNuclear data
 Index

Periodic Table

Chemistry concepts
 
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Promethium

As a member of the fourteen member lanthanide series, this element is unique in that it does not occur in nature in appreciable quantities. It has been made artificially.

Atomic dataNuclear data
 Index

Periodic Table

Chemistry concepts

Reference
Pauling
Ch. 26
 
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Promethium Nuclear Data

Z
A
Atomic
Mass (u)
Nuclear
Mass(GeV/c2
Binding
Energy(MeV)
Spin
Natural
Abund.
Half-life
Decay
Q
MeV
61
145
144.912743
134.9553
1203.9
5/2
...
17.7y
EC
0.16
61
146
145.914708
135.8886
1210.2
3
...
5.53y
EC
1.48
Atomic data
Index

Periodic Table

Chemistry concepts

Reference
Rohlf
 
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