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Promethium(III) oxide is a compound with the formula Pm 2 O 3. It is the most common form of promethium . Crystal structure: Promethium
Kaynak: Promethium(III) oxide

Elements with atomic numbers 41 through 82 are apparently stable (except technetium , element 43 and promethium , element 61, which are
Kaynak: Chemical element

Jacob Akiba Marinsky (1918 – September 1, 2005) was a chemist who was the co-discoverer of the element promethium . Marinsky was born in
Kaynak: Jacob A. Marinsky

Charles DuBois Coryell (February 21, 1912 – January 7, 1971 was an American chemist who was one of the discoverers of the element promethium .
Kaynak: Charles D. Coryell

Lawrence Elgin Glendenin (November 8, 1918 November 22, 2008) was an American chemist who co-discovered the element promethium .
Kaynak: Lawrence E. Glendenin

primary decay product s before 142 Nd are element Pr (praseodymium ) isotopes and the primary products after are element Pm (promethium ) isotopes.
Kaynak: Neodymium

The second-lightest, exclusively radioactive element, promethium , has an atomic number of 61. Atomic nuclei with an odd number of proton
Kaynak: Technetium

Despite their name, rare earth elements (with the exception of the radioactive promethium ) are relatively plentiful in the Earth's crust
Kaynak: Rare earth element

Lighter unstable isotopes of samarium primarily decay by electron capture to isotopes of promethium , while heavier ones convert through
Kaynak: Samarium

The first two are orthophosphate minerals LnPO 4 (Ln denotes a mixture of all the lanthanides except promethium ), and the third is a
Kaynak: Europium

Where indefinite self-luminosity in darkness was required, safer radioactive promethium paint was initially used, later replaced by
Kaynak: Radium

Its most striking characteristic is the presence of the unstable element promethium in its emission spectrum . All isotopes of this
Kaynak: GY Andromedae

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