Atomistry » Curium
Atomistry »
  Curium »
    Isotopes »
    Energy »
    Production »
    Application »
    PDB 4zhf-4zhf »

Element Curium, Cm


The member of actinide or actinoid group of chemical elements - Curium, an element of the actinide series, was first discovered (prepared) in 1944 by Glenn T. Seaborg with co-workers at the Metallurgical Laboratory of the University of Chicago by bombarding plutonium with helium ions. A pure compound, curium hydroxide was synthesized three years later. The element was named for Pierre and Marie (Maria) Curie, by analogy with gadolinium, a rare earth element with similar electron shell structure. The chemical symbol for curium is Cm, in which the first letter C is the initial of Curie and m is the initial of Marie.


Curium does not have stable isotopes. 15 isotopes with mass numbers from 237 to 251 are currently known. The most long-lived of them are 247Cm (T1/2 1.58x107 years) and 248Cm (T1/2 3.4x105 years), alpha-particle sources. The former has been found in the Earth's crust in some radioactive minerals, the parent of 243Pu 235U family.


Last articles

Zn in 7VD8
Zn in 7V1R
Zn in 7V1Q
Zn in 7VPF
Zn in 7T85
Zn in 7T5F
Zn in 7NF9
Zn in 7M4M
Zn in 7M4O
Zn in 7M4N
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy