A relatively smooth, malleable, steady rare-earth factor happening in gadolinite, monazite, as well as other rare-earth minerals. Atomic quantity 67; atomic weight 164.930; melting point 1,461°C; boiling-point 2,600°C; specific-gravity 8.803; valence 3. See dining table at element.
A metallic chemical element (symbolization Ho) with an atomic range 67.
an uncommon part of atomic number 67 reported to be within gadolinite. Chemical logo Ho. Atomic body weight 164.93. Valence +3. It absolutely was recognized by spectral absorption bands in 1878 because of the Delafontaine and Soret, just who labeled as it "Element X". Later the Swedish chemist Cleve on their own found it in erbia, and known as it after their native town Stockholm. The very first preparation of pure Holmia, the yellow oxide, was not made until 1911.
Chemical symbolization, Ho. A particular material whoever chemical properties haven't been investigated, but which is believed is an elementary compound.
a trivalent metallic element of the rare-earth team; does occur along with yttrium; types very magnetic substances