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Promethium is a
chemical element with
symbol Pm and
atomic number 61. All of its
isotopes are radioactive; it is
extremely rare, with only
about 500–600...
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Promethium (61Pm) is an
artificial element,
except in
trace quantities as a
product of
spontaneous fission of 238U and 235U and
alpha decay of 151Eu, and...
- up
Promethium or
promethium in Wiktionary, the free dictionary.
Promethium is a
chemical element with
symbol Pm and
atomic number 61.
Promethium may...
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promethium dials also
dropped by half
every 2.62 years,
giving them a
short useful life,
which led to
promethium's replacement by tritium.
Promethium-based...
- half of the 20th century,
radium was
progressively replaced with
promethium-147.
Promethium is only a
relatively low-energy beta-emitter, which,
unlike alpha...
- and
Madame Rouge.
During this time, he
invents a form of
uranium called Promethium which is used by
Deathstroke and Vic Stone/Cyborg. In
Swamp Thing (vol...
-
Promethium nitride is a
binary inorganic compound of
promethium and
nitrogen with the
chemical formula PmN. PmN
crystals are of
cubic system with Fm3m...
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Promethium(III)
sulfide is a
binary inorganic compound with the
chemical formula Pm2S3. The
compound can be
prepared by
reacting promethium and sulfur...
-
September 1, 2005) was a
chemist who was the co-discoverer of the
element promethium.
Marinsky was born in Buffalo, New York on
April 11, 1918. He attended...
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Promethium(III)
oxalate is an
oxalate of
promethium, with the
chemical formula Pm2(C2O4)3. Its
decahydrate crystallizes in the
monoclinic crystal system...
