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Lutetium is not a particularly abundant element, although it is significantly more common than silver in the Earth's crust. It has few specific uses. It has few specific uses. Lutetium-176 is a relatively abundant (2.5%) radioactive isotope with a half-life of about 38 billion years, used to determine the age of minerals and meteorites .
It is a silvery-white, rare earth metal that is malleable and ductile. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Terbium is never found in nature as a free element, but it is contained in many minerals, including cerite, gadolinite, monazite, xenotime and ...
A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements. It is a lanthanide , a rare-earth element , originally found in the gadolinite mine in Ytterby , Sweden , which is the source of the element's name.
Bureaucratium is an element with a negative half-life, becoming more massive and sluggish as time goes by. Byzanium Raise the Titanic! [29] Fictional element in the book Raise the Titanic! and its film adaptation, which is a main focus of the story arc. It is a powerful radioactive material sought by both the Americans and Russians for use as ...
It is a soft, ductile, and silvery-white metal that tarnishes when exposed to air. Cerium is the second element in the lanthanide series, and while it often shows the oxidation state of +3 characteristic of the series, it also has a stable +4 state that does not oxidize water.
Indium is a shiny silvery-white, highly ductile post-transition metal with a bright luster. [23] It is so soft ( Mohs hardness 1.2) that it can be cut with a knife and leaves a visible line like a pencil when rubbed on paper. [ 24 ]
It is a silvery-white metallic d-block element. Historically, it has been classified as a rare-earth element , [ 9 ] together with yttrium and the lanthanides . It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia .
Actinium is a soft, silvery-white, [17] [18] radioactive, metallic element. Its estimated shear modulus is similar to that of lead . [ 19 ] Owing to its strong radioactivity, actinium glows in the dark with a pale blue light, which originates from the surrounding air ionized by the emitted energetic particles. [ 20 ]