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Additional
scandium
English Wikipedia - The Free Encyclopedia
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Scandium
Scandium
is a
chemical element
with symbol
Sc
and
atomic number
21. A silvery-white metallic
d-block element
, it has historically been sometimes classified as a
rare earth element
, together with
yttrium
and the
lanthanoids
. It was discovered in 1879 by spectral analysis of the
minerals
euxenite
and
gadolinite
from
Scandinavia
.
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