technetium technetium Nalin Balan NUCL two hundred Paper due 02/07/97 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 authentically 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.
technetium was the first element to be produced artificially. Since its discovery, searches for the element in routine material have been do without s uccess. If it does exist, the concentration moldiness be very small. Technetium has been found in the spectrum of S-, M-, and N-type stars, and its resence in stellar matter is stellar(a) to new theories of the producti...If you want to wedge by a plentiful essay, order it on our website:
OrderessayIf you want to get a full information about our service, visit our page: How it works.
No comments:
Post a Comment