|Group||Lanthanides||Melting point||799°C, 1470°F, 1072 K|
|Period||6||Boiling point||3443°C, 6229°F, 3716 K|
|Block||f||Density (g cm−3)||6.77|
|Atomic number||58||Relative atomic mass||140.116|
|State at 20°C||Solid||Key isotopes||140Ce|
|Electron configuration||[Xe]4f1 5d1 6s2||CAS number||7440-45-1|
|ChemSpider ID||22411||ChemSpider is a free chemical structure database.|
- Cerium is a soft, malleable, ductile metal with an atomic number 58 and represented by the symbol Ce in the Periodic Table.
- Cerium is the key component of mischmetal alloy which is used in flints for cigarette lighters. The reason for it is cerium produces sparks when struck.
- Used in the manufacture of arc lamps, incandescent mantles for gas lighting.
- Acts as a catalyst in the conversion process of nitrogen oxide to nitrogen.
- Cerium sulfide is used as a pigment as it has a rich red color.
- Used in almost all color televisions and energy-saving lamps.
- It reacts readily in the air and tarnishes gradually. It oxidizes rapidly in hot water, slowly in cold water and dissolves in the acids.
- Cerium is one of the most abundant among the rare earth elements.
- It is found in lanthanides and makes about 0.0046% of Earth’s crust weight.
- World’s production of cerium marks up to 23000 tonnes a year which may increase as more cerium is used nowadays.
- Cerium has no biological role.
- Cerium is most dangerous in the working environment due to the fact that gases and DAMPs can be inhaled with air.
- Constant exposure to Cerium may cause lung problems and other serious diseases.