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Promethium

Description & History
pro·me·thi·um (1948):
a radioactive metallic element of the rare-earth group obtained as a fission product of uranium or from neutron-irradiated neodymium
Element

SymbolPm
Z 61
Atomic Weight 147.
Density 6.78200006
Edge Energies
(keV)
K 45.1839981
L1 7.42799997
L2 7.01300001
L3 6.46000004
M 1.65100002
K-alpha 38.6489983
K-beta 43.9449997
L-alpha 5.63600016
L-beta 6.20599985
Edge jumps

K 5.91229582
L1 1.15958512
L2 1.40999997
L3 2.7019999
Fluorescence
yield
K 0.925000012
L1 0.0659999996
L2 1.65100002
L3 38.6489983

Alphabetical List of Elements

  Actinium(Ac) Europium(Eu) Neodymium(Nd) Silicon(Si)
  Aluminum(Al) Fermium(Fm) Neon(Ne) Silver(Ag)
  Americium(Am) Fluorine(F) Neptunium(Np) Sodium(Na)
  Antimony(Sb) Francium(Fr) Nickel(Ni) Strontium(Sr)
  Argon(Ar) Gadolinium(Gd) Niobium(Nb) Sulfur(S)
  Arsenic(As) Gallium(Ga) Nitrogen(N) Tantalum(Ta)
  Astatine(At) Germanium(Ge) Nobelium(No) Technetium(Tc)
  Barium(Ba) Gold(Au) Osmium(Os) Tellurium(Te)
  Berkelium(Bk) Hafnium(Hf) Oxygen(O) Terbium(Tb)
  Beryllium(Be) Hassium(Hs) Palladium(Pd) Thallium(Tl)
  Bismuth(Bi) Helium(He) Phosphorus(P) Thorium(Th)
  Bohrium(Bh) Holmium(Ho) Platinum(Pt) Thulium(Tm)
  Boron(B) Hydrogen(H) Plutonium(Pu) Tin(Sn)
  Bromine(Br) Indium(In) Polonium(Po) Titanium(Ti)
  Cadmium(Cd) Iodine(I) Potassium(K) Tungsten(W)
  Calcium(Ca) Iridium(Ir) Praseodymium(Pr) Ununbium(Uub)
  Californium(Cf) Iron(Fe) Promethium(Pm) Ununhexium(Uuh)
  Carbon(C) Krypton(Kr) Protactinium(Pa) Ununnilium(Uun)
  Cerium(Ce) Lanthanum(La) Radium(Ra) Ununoctium(Uuo)
  Cesium(Cs) Lawrencium(Lr) Radon(Rn) Ununquadium(Uuq)
  Chlorine(Cl) Lead(Pb) Rhenium(Re) Unununium(Uuu)
  Chromium(Cr) Lithium(Li) Rhodium(Rh) Uranium(U)
  Cobalt(Co) Lutetium(Lu) Rubidium(Rb) Vanadium(V)
  Copper(Cu) Magnesium(Mg) Ruthenium(Ru) Xenon(Xe)
  Curium(Cm) Manganese(Mn) Rutherfordium(Rf) Ytterbium(Yb)
  Dubnium(Db) Meitnerium(Mt) Samarium(Sm) Yttrium(Y)
  Dysprosium(Dy) Mendelevium(Md) Scandium(Sc) Zinc(Zn)
  Einsteinium(Es) Mercury(Hg) Seaborgium(Sg) Zirconium(Zr)
  Erbium(Er) Molybdenum(Mo) Selenium(Se)


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