Samarium

Samarium is a chemical element in the periodic table that has the symbol Sm and atomic number 62.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Samarium is a rare earth metal, with a bright silver lustre, that is reasonably stable in air; it ignites in air at 150?C. Three crystal modifications of the metal also exist, with transformations at 734 and 922?C, respectively.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Chemical element: A chemical element, often called simply element, is the class of atoms which contain the same number of protons....

Periodic table: The periodic table of the chemical elements, also called the Mendeleev periodic table, is a tabular display of the known chemical elements. First created by Dmitri Mendeleev, the elements are arranged by electron configuration so that many chemical properties follow a regular pattern across the tabl...

Atomic number: The atomic number (Z) is a term used in chemistry and physics to represent the number of protons found in the nucleus of an atom. In an atom of neutral charge, the number of electrons typically equals the atomic number....