There are seven naturally occurring isotopes of samarium (Sm), and they are Sm-144 Sm-147, Sm-148, Sm-149, Sm-150, Sm-152 and Sm-154.
Samarium's radionuclides Sm-147, Sm-148, and Sm-149 are alpha emiters. That is, they emit helium nuclei. The other isotopes are stable. A link can be found below.
About 40% of the samarium found in nature is radioactive. The naturally occurring radioactive isotopes are all rather long lived, with the shortest half life being 106,000,000,000 years. Like all other elements, there are synthetic radioactive isotopes of promethium, and these have shorter half lives.
Samarium is a good conductor for heat and electricity.
The atoms of the element samarium (atomic number 62) have the electron configuration [Xe] 4f6 6s2
56.279 grams Samarium(Sm) (1 mole Sm/150.36 grams)(6.022 X 10^23/1 mole Sm) = 2.2540 X 10^23 atoms of Samarium
Samarium
The rare earth metal samarium is part of the Lanthanidefamily.
Samarium doesn't kill cancer cells. A radioactive isotope of samarium (samarium-153) is used in a chemotherapy agent, but it's the radiation, not the samarium, that kills the cancer cells.
Samarium is a metal.
Samarium 99 % cost is 0,025 $/g; see the link:http://www.metal-pages.com/metalprices/samarium/.
Samarium is a good conductor for heat and electricity.
It is also called Samarium in Latin, hoped this helped!
The lanthanide metal samarium is normally a solid when encountered.
Samarium has six electron shells.
The noble gas notation for samarium is [Xe] 6s2 4f6.
Samarium costs about 120 - 140 USD per 100 grams.
Samarium is an element in the periodic table, atomic number 62, chemical symbol Sm.
Jean Charles Galissard de Marignac, a Swiss chemist, named samarium in 1853.
Samarium, with the chemical symbol Sm, is the chemical element with the atomic number 62.