On this page I'll provide comprehensive data for Promethium. I hope you profit from it.
Promethium Overview
Name Origin
Named for the Greek god, Prometheus.
Symbol
Pm (Promethium)Description
Rare earth metal of synthetic origin on the earth, naturally made in stars.
Discovery
Discovered By: J.A. Marinsky, L.E. Glendenin, C.D. Coryell
Year: 1945
Location: United States
Sources
Does not occur naturally. Found among fission products of uranium, thorium, and plutonium.
Uses
It has been used as a source of radioactivity for thickness-measuring gages.
State at 20 °C
Solid
Group
Group Name: Rare EarthÂ
Group in periodic table: 0
Period in periodic table:Â 6
Atomic Number
61Learn more about the atomic number.
Atomic Mass
-144,9127
Learn more about the atomic mass.
Stable Isotopes
none
Learn more about stable isotopes.
Radioactive Isotopes
Pm143-151
Learn more about radioactive isotopes.
Atomic Structure
Crystalline Structure
Hexagonal
Learn more about crystalline structure
Shells
Electrons per energy level: 2,8,18,23,8,2
Learn more about electron shells
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4 s2 3 d10 4 p6 5 s2 4 d10 5 p6 6 s2 4 f5
Learn more about electron configuration.
Abbreviated Configuration
[Xe] 4f5 6s2
Learn more about abbreviated electron configuration.
Valence Electrons
3
Learn more about valence electrons
Atom Size
Atomic Radius
2.62 Ã…
Learn more about atomic radius.
Covalent Radius
1.63 Ã…
Learn more about covalent radius.
Ionic Radius
1.09 (+3) Ã…
Learn more about ionic radius.
Molar Volume
22.39 cm³/mol
Learn more about molar volume.
Chemical Properties
Common Oxidation States
First Ionization Energy
First Ionization Potential
Second Ionization Potential
Third Ionization Potential
Physical Properties
Density
Electrical Conductivity
Thermal Conductivity
Elastic Modulus
Coefficient of Thermal Expansion
Learn more about coefficient of thermal expansion.
Heat Properties
Other heat related physical properties:
Melting Point
Boiling Point
Specific Heat
Heat of Vaporization
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Along with basic element information, it also comes with color coded info about: State (Gas, Liquid or Solid at room temperature), Groups/series details and much more...
How about an incentive to share this post? (You will help other colleagues find this blog)
Download and enjoy this complete and colored periodic table for you to edit and enjoy. It's in an editable excel format or .ods (open).
[lock][Download excel ##download##]
[Download open .ods format ##download##][/lock]
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