-
mistakenly ****igned it as
element 43
rather than
element 75 and
named it
nipponium. It was
rediscovered in 1925 by
Walter Noddack, Ida
Tacke and Otto Berg...
-
claimed discovery of
element 43 (later
known as technetium),
which he
named nipponium. In fact, he had discovered, but misidentified,
element 75 (later called...
-
already been
found by ****anese
chemist Masataka Ogawa in 1908 and
named nipponium, but he
mistakenly ****igned it as
element 43
instead of 75 and so his...
- 1002/prac.184704001110. Yoshihara, H. K. (2004). "Discovery of a new
element '
nipponium': re-evaluation of
pioneering works of
Masataka Ogawa and his son Eijiro...
-
discovery of
nipponium was
accepted once in the
periodic table of
chemical elements as the
element 43, but
disappeared later. However,
nipponium clearly shows...
- in
thorianite but ****igned it as
element 43
instead of 75 and
named it
nipponium. In 1925
Walter Noddack, Ida Eva Tacke, and Otto Berg
announced its separation...
- 240–242. ISBN 978-0-19-850341-5. Yoshihara, H. K. (3
February 2000). "
Nipponium: The
Element Z = 75 (Re)
Instead of Z = 43 (Tc)1, 2" (PDF).
Archived from...
- chimie. 28: 540. Yoshihara, H. K. (2004). "Discovery of a new
element '
nipponiumʼ: re-evaluation of
pioneering works of
Masataka Ogawa and his son Eijiro...
-
Naturally occurring rhenium (75Re) is 37.4% 185Re,
which is
stable (although it is
predicted to decay), and 62.6% 187Re,
which is
unstable but has a very...
- protactinium. The
symbol and name were
later used for
element 93. Np
Nipponium 43
Discredited claim to
discovery of technetium. The
symbol Np is now...
