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Contents. Isotopes of curium. Curium (96 Cm) is an artificial element with an atomic number of 96. Because it is an artificial element, a standard atomic weight cannot be given, and it has no stable isotopes. The first isotope synthesized was 242 Cm in 1944, which has 146 neutrons. There are 19 known radioisotopes ranging from 233 Cm to 251 Cm.
Curium is a synthetic chemical element; it has symbol Cm and atomic number 96. This transuranic actinide element was named after eminent scientists Marie and Pierre Curie, both known for their research on radioactivity. Curium was first intentionally made by the team of Glenn T. Seaborg, Ralph A. James, and Albert Ghiorso in 1944, using the ...
Pages in category "Isotopes of curium" The following 22 pages are in this category, out of 22 total. This list may not reflect recent changes. ...
Isotope analysis is the determination of isotopic signature, the relative abundances of isotopes of a given element in a particular sample. Isotope analysis is frequently done by isotope ratio mass spectrometry. For biogenic substances in particular, significant variations of isotopes of C, N, and O can occur.
The elements between uranium and curium form a transition between these two kinds of behaviour, where higher oxidation states continue to exist, but lose stability with respect to the +3 state. [82] The +2 state becomes more important near the end of the series, and is the most stable oxidation state for nobelium, the last 5f element. [82]
Radioactive isotope table "lists ALL radioactive nuclei with a half-life greater than 1000 years", incorporated in the list above. The NUBASE2020 evaluation of nuclear physics properties F.G. Kondev et al. 2021 Chinese Phys. C 45 030001. The PDF of this article lists the half-lives of all known radioactives nuclides.
Values from CRC are ionization energies given in the unit eV; other values are molar ionization energies given in the unit kJ/mol. The first of these quantities is used in atomic physics, the second in chemistry, but both refer to the same basic property of the element. To convert from "value of ionization energy" to the corresponding "value of ...
Also, a number of ternary oxides of the type M(II)CmO 3 are known, where M stands for a divalent metal, such as barium. Thermal oxidation of trace quantities of curium hydride (CmH 2–3) has been reported to give a volatile form of CmO 2 and the volatile trioxide CmO 3, one of two known examples of the very rare +6 state for curium.