Not to mention rare elements such as lanthanum, cerium, and neodymium, essential to modern technology and commanding high prices.
Piperine colours the sulphuric acid blood-red, and is turned dark-brown, almost black by the cerium oxide (Sonnenschein).
A rare metal, discovered by Mosander, associated with oxide of cerium.
The mantle is made by dipping a cylinder of cotton net into a solution of nitrate of thorium and cerium, containing 99 per cent.
How much thorium, not to speak of cerium, could they take at a maximum.
cerium looks like iron, having both its color and lustre, but is heavier, and has the hardness of calcite.
The selenides of cerium, zinc, and manganese are flesh-coloured; most of the others are black.
cerium is detected by giving with borax a bead which is yellow in the oxidising, and colourless in the reducing flame.
Pepsin (Bullock and Reynolds) and oxalate of cerium are said to be most valuable remedies in the sickness of pregnancy.
This element, in the researches of an associate, Mr. Ludwig Haitinger, proved to be cerium in minute quantity.
element, first isolated in pure form in 1875, named for ceria, the name of the earth from which it was taken, which was discovered in 1803 and named by Berzelius and Hissinger for Ceres, the minor planet, which had been discovered in 1801 and named for the Roman goddess Ceres.
cerium ce·ri·um (sēr'ē-əm)
A lustrous, malleable metallic rare-earth element that occurs chiefly in the minerals monazite and bastnaesite, exists in four allotropic states, and is used in lighter flint alloys. Atomic number 58; atomic weight 140.12; melting point 799°C; boiling point 3,424°C; specific gravity 6.67; valence 3, 4.
A shiny, gray metallic element of the lanthanide series. It is ductile and malleable and is used in electronic components, alloys, and lighter flints. It is also used in glass polishing and as a catalyst in self-cleaning ovens. Atomic number 58; atomic weight 140.12; melting point 795°C; boiling point 3,468°C; specific gravity 6.67 to 8.23; valence 3, 4. See Periodic Table.