Vērtējums:
Publicēts: 01.12.1996.
Valoda: Angļu
Līmenis: Vidusskolas
Literatūras saraksts: Nav
Atsauces: Nav
  • Eseja 'Technetium', 1.
Darba fragmentsAizvērt

Nalin Balan
NUCL 200
Paper due 02/07/97
TECHNETIUM
Atomic Number: 43
Atomic Symbol: Tc
Atomic Weight: (97)
Electron Configuration: -18-13-2
History, Properties and Uses:
(Gr. technetos, artificial) Element 43 was predicted on the basis of the periodi
c table,
and was erroneously reported as having been discovered in 1925, at which
time it was
named masurium. The element was actually discovered by Perrier and Segre
in Italy in
1937. It was found in a sample of molybdenum, which was bombarded by deut
erons in the Berkeley cyclotron, and which E. Lawrence sent to these investigators
.
Te…

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