|
Technetium is the only element below uranium that does not exist on Earth. ... Such was the case with element 43. When the element's "discovery" was announced in 1925, chemists were excited, but no one else was able to repeat the discovery. An error had been made. In fact, it was not until more than ten years later that...
|
www.chemistryexplained.com/elements/P-T/Technetium.html
www.chemistryexplained.com/elements/P-T/Technetium.html
|
|
|
|
Their results were disputed and eventually the discovery of element 43 (Technetium) was generally credited to Perrier and Segre, based on their chemical separation of neutron-irradiated molybdenum in 1937. Using first principles x-ray emission spectral generation algorithms from the N.I.S.T. DTSA spectral processing...
|
www.vanderkrogt.net/elements/elem/tc.html
|
|
|
Technetium - Wikipedia, the free encyclopedia
|
|
Technetium (pronounced /tɛkˈniːʃɪəm/ tek- NEE -shi-əm ) is the lightest chemical element with no stable isotope, and is therefore the lightest radioactive element. It has atomic number...
en.wikipedia.org/wiki/Technetium
|
|
|
There are no significant uses for Technetium, this is because it is a synthetic element. Though one isotope was found to be a good source of radiation. As the picture shows technetium is found in nuclear reactors and that's why it is radioactive.
|
www.fairfield.k12.ct.us/tomlinson/element/technetium_us...
www.fairfield.k12.ct.us/tomlinson/element/technetium_uses.htm
|
|
|
The Element Technetium - Basic Physical and Historical Information ... The Element Technetium; [Click for Isotope Data] ... Technetium was the first artificially produced element. It was isolated by Carlo Perrier and Emilio Segrè in 1937. Technetium was created by bombarding molybdenum atoms with deuterons that had...
|
education.jlab.org/itselemental/ele043.html
|
|
Biology question: What contribution did Ida Tacke and Emilio Segre make to the discovery of technetium? Ida Tacke was on the German team that thought they'd discovered the element technetium back in 1925. ... Discuss the question "What contribution did Ida Tacke and Emilio Segre make to the discovery of technetium?"
|
wiki.answers.com/Q/What_contribution_did_ida_tacke_and_...
wiki.answers.com/Q/What_contribution_did_ida_tacke_and_emilio_segre_give_to_the_discovery_of_technetium
|
|
NIST Sigma Xi Colloquium Series ... Thursday, March 2, 2000; 10:30 -11:30 am; Green Auditorium ... The 1998 Sigma Xi Young Scientist Award Winner ; Physical and Chemical Properties Division; NIST...
|
www.nist.gov/sigmaxi/talks/Irikura.html
|
|
Since its discovery, searches for technetium in terrestrial materials have been made without success until recently. Technetium has been found in the spectrum of S-, M-, and N-type stars, and its presence in stellar matter is leading to new theories of the production of heavy elements in the stars.
|
pubs.acs.org/cen/80th/technetium.html
pubs.acs.org/cen/80th/technetium.html
|
|
Brief description: since its discovery, searches for the element technetium in terrestrial materials have been made without success. Technetium has been found in the spectrum of S-, M-, and N-type stars, and its presence in stellar matter is leading to new theories of the production of heavy elements in the stars.
|
www.webelements.com/technetium/
www.webelements.com/technetium/
|
|
