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 weight, 89. [Written also
ittrium.]
&fist; 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.
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 weight, 89. [Written also
ittrium.]
&fist; 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.
