Part one of term paper
NUCL 200 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 ...

Part two of term paper
... for the element in terrestrial material have been made without s uccess. If it does exist, the concentration must be very small. Technetium has been found in the spectrum of S-, M-, and N-type stars, and its resence in stellar matter is leading to new theories of the production of heavy elements in the stars. Nineteen isotopes of technetium, with atomic masses ranging from 90 to 108, are known. 97Tc has a half-life of 2.6 x 10^6 years. 98Tc has a half-life of 4.2 x 10^6 years. The isomeric isot ...