Samarium
type: Entity
type: Concept
created: 2022-02-07T17:00:00
alternative label: Sm
broader: Chemical entity
definition: [Wikipedia] Samarium is a chemical element with the symbol Sm and atomic number 62. It is a moderately hard silvery metal that slowly oxidizes in air. Being a typical member of the lanthanide series, samarium usually assumes the oxidation state +3. Compounds of samarium(II) are also known, most notably the monoxide SmO, monochalcogenides SmS, SmSe and SmTe, as well as samarium(II) iodide. The last compound is a common reducing agent in chemical synthesis. Samarium has no significant biological role but is only slightly toxic.
in scheme: ozcar-theia

Chemical entity
type: Concept
narrower: Samarium