Padron:Infobox promethium

Promethium, 61Pm
Promethium
Bigkas /prˈmθiəm/ (proh-MEE-thee-əm)
Appearancemetallic
Bilang na pangmasa[145]
Promethium sa talahanayang peryodiko
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson


Pm

Np
neodymiumpromethiumsamarium
Atomikong bilang (Z)61
Groupn/a
Period6
Block  f-block
Electron configuration[Xe] 4f5 6s2
Electrons per shell2, 8, 18, 23, 8, 2
Physical properties
Phase at STPsolido
Melting point1315 K ​(1042 °C, ​1908 °F)
Boiling point3273 K ​(3000 °C, ​5432 °F)
Density (at 20° C)α-145Pm: 7.149 g/cm3
α-147Pm: 7.247 g/cm3[1]
Heat of fusion7.13 kJ/mol
Heat of vaporization289 kJ/mol
Atomic properties
Oxidation states+2, +3 (isang katamtamang panimulang oksido)
ElectronegativityPauling scale: 1.13 (?)
Ionization energies
  • 1st: 540 kJ/mol
  • 2nd: 1050 kJ/mol
  • 3rd: 2150 kJ/mol
Atomic radiusempirical: 183 pm
Covalent radius199 pm
Color lines in a spectral range
Mga linyang espektral ng promethium
Other properties
Natural occurrencemula sa pagkabulok
Crystal structuredouble hexagonal close-packed (dhcp) (hP4)
Lattice constants
Double hexagonal close packed crystal structure for promethium
a = 0.36393 pm
c = 1.1739 pm (at 20 °C)[1]
Thermal expansion9.0×10−6/K (at r.t.)[2][a]
Thermal conductivity17.9 W/(m⋅K)
Electrical resistivityest. 0.75 µΩ⋅m (at r.t.)
Magnetic orderingparamagnetic[3]
Young's modulusα form: est. 46 GPa
Shear modulusα form: est. 18 GPa
Bulk modulusα form: est. 33 GPa
Poisson ratioα form: est. 0.28
CAS Number7440-12-2
History
DiscoveryCharles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin (1945)
Named byGrace Mary Coryell (1945)
Isotopes of promethium
Main isotopes[4] Decay
abun­dance half-life (t1/2) mode pro­duct
145Pm synth 17.7 y ε 145Nd
α 141Pr
146Pm synth 5.53 y ε 146Nd
β 146Sm
147Pm trace 2.6234 y β 147Sm
Kategorya Kategorya: Promethium
| references
Pm · Promethium
Nd ←

ibox Nd

iso61 Pm  [e]
IB-Pm [e]
IBisos [e]
→ Sm

ibox Sm

indexes by PT (page)
child table, as reused in {IB-Pm}
Main isotopes of promethium
Main isotopes[4] Decay
abun­dance half-life (t1/2) mode pro­duct
145Pm synth 17.7 y ε 145Nd
α 141Pr
146Pm synth 5.53 y ε 146Nd
β 146Sm
147Pm trace 2.6234 y β 147Sm
  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Allotropes (demo)
Group (demo)
Period (demo)
Block (demo)
Standard atomic weight
  most stable isotope
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Wikidata *
Symbol etymology (11 non-trivial)
* Not used in {{Infobox element}} (2021-12-24)
See also Kategorya:Infobox element data sets (0)
  1. The thermal expansion of Pm is anisotropic: the parameters for each crystal axis (at 20 °C) are αa = 11.1×10−6/K, αc = 15.0×10−6/K, and αaverage = αV/3 = 12.4×10−6/K.[1]

Talababa

  1. 1.0 1.1 1.2 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.{{cite book}}: CS1 maint: date auto-translated (link)
  2. Cverna, Fran (2002). "Ch. 2 Thermal Expansion". ASM Ready Reference: Thermal properties of metals (PDF). ASM International. ISBN 978-0-87170-768-0.{{cite book}}: CS1 maint: date auto-translated (link)
  3. Lide, D. R., pat. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (ika-86th (na) edisyon). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.{{cite book}}: CS1 maint: date auto-translated (link)
  4. 4.0 4.1 Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.{{cite journal}}: CS1 maint: date auto-translated (link)