Ruthenium

Ruthenium

Ruthenium Definition Ruthenium (symbol Ru) is a rare, silvery-gray metallic element that is hard, brittle, and very resistant to corrosion. It is a rare transition…
Rhodium

Rhodium

Rhodium Definition Rhodium (Rh) is a rare, silvery-white metallic element that is hard, durable, and resistant to acids. It is a noble metal and a…
Palladium

Palladium

Palladium Definition Palladium (Pd) is a malleable, ductile, grayish-white metallic element that occurs naturally with platinum. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a…
Technetium

Technetium

Technetium Definition Technetium is a silvery-gray, radioactive metallic element. It was the first element to be artificially made, and it is produced naturally in extremely…
Hafnium

Hafnium

Hafnium Definition Hafnium is a bright, silvery metallic element that occurs in zirconium ores, with symbol Hf. Because hafnium absorbs neutrons better than any other…
Scandium

Scandium

Scandium Definition Scandium is a soft, silvery, very lightweight metallic element that is found in various rare minerals and is a byproduct in the processing…
Promethium

Promethium

Promethium Definition Promethium is a radioactive metallic element of the lanthanide series, which is does not occur in nature but is prepared through the fission…
Thulium

Thulium

Thulium Definition Thulium is a soft, silver-gray metallic element of the lanthanide series with symbol Tm. Its Atomic number 69; atomic weight 168.934; melting point…
Samarium

Samarium

Samarium Definition Samarium is a silvery-white metallic element of the lanthanide series that exists in several forms and has seven naturally occurring isotopes. Its atomic…
Lutetium

Lutetium

Lutetium Definition Lutetium is a silvery-white metallic element of the lanthanide series that is used in nuclear technology. It is the last element in the…
Euxenite

Euxenite

Euxenite Definition Euxenite is a rare brownish-black mineral containing erbium, cerium, uranium, columbium, and yttrium. Titanium replaces niobium–tantalum in the molecular structure to form the…
Ytterbium

Ytterbium

Ytterbium Definition Ytterbium is a soft, silvery-white metallic element of the lanthanide series that occurs as seven stable isotopes with symbol Yb. Its atomic number…
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