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Hasil cari dari kata atau frase: ittrium (0.00838 detik)
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Definition: ittrium
Yttrium
\Yt"tri*um\, n. [NL., from Ytterby, in Sweden. See
Erbium.] (Chem.)
A rare metallic element of the boron-aluminium group, found
in gadolinite and other rare minerals, and extracted as a
dark gray powder. Symbol Y. Atomic number 39. Atomic weight,
88.9. [Written also
ittrium.]
[1913 Webster +PJC]
Note: Associated with yttrium are certain rare elements, as
erbium, ytterbium, samarium, etc., which are separated
in a pure state with great difficulty. They are studied
by means of their spark or phosphorescent spectra.
Yttrium is now regarded as probably not a simple
element, but as a mixture of several substances.
[1913 Webster]
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