scandium
Source: The Collaborative International Dictionary of English v.0.48
Scandium \Scan"di*um\, n. [NL. So called because found in
Scandinavian minerals.] (Chem.)
A rare metallic element of the boron group, whose existence
was predicted under the provisional name ekaboron by means
of the periodic law, and subsequently discovered by spectrum
analysis in certain rare Scandinavian minerals (euxenite and
gadolinite). It has not yet been isolated. Symbol Sc. Atomic
weight 44.
[1913 Webster]
Source: The Collaborative International Dictionary of English v.0.48
Ekabor \Ek"a*bor`\ ([e^]k"[.a]*b[=o]r`), Ekaboron \Ek"a*bo"ron\
(-b[=o]"r[o^]n), n. [G., fr. Skr. [=e]ka one + G. bor, boron,
E. boron.] (Chem.)
The name given by Mendelejeff in accordance with the periodic
law, and by prediction, to a hypothetical element then
unknown, but since discovered and named scandium; -- so
called because it was a missing analogue of the boron group.
See Scandium.
[1913 Webster]
Source: WordNet (r) 2.0
scandium
n : a white trivalent metallic element; sometimes classified in
the rare earth group; occurs in the Scandinavian mineral
thortveitite [syn: Sc, atomic number 21]
Source: Elements database 20001107
scandium
Symbol: Sc
Atomic number: 21
Atomic weight: 44.956
Rare soft silvery metallic element belonging to group 3 of the periodic
table. There are ten isotopes, nine of which are radioactive and have
short half-lives. Predicted in 1869 by Mendeleev, isolated by Nilson in
1879.
Powered by dict.org
|
Dictionary
top
