Noun1.cobalt 60- a radioactive isotope of cobalt with mass number 60; a source of exceptionally intense gamma rays; used in radiation therapy atomic number 27,cobalt,Co- a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition ...
cobalt-60 (redirected fromCobalt-60 (isotope)) Encyclopedia co·balt-60 (kō′bôlt-sĭk′stē) n. A radioactive isotope of cobalt with mass number 60 and exceptionally intense gamma-ray activity, used in radiotherapy, metallurgy, and materials testing. ...
atomic massmass excessnuclear binding energynucleon separation energyQ-valuenucleon residual interaction parameterThis document is part of the Supplement containing the complete sets of data of Subvolume A 'Nuclei with Z = 1 - 54' of Volume 22 'Nuclear Binding Energies and Atomic Masses' of ...
Chemical properties of cobalt - Health effects of cobalt - Environmental effects of cobaltAtomic number 27 Atomic mass 58.9332 g.mol -1 Electronegativity according to Pauling 1.8 Density 8.9 g.cm-3 at 20°C Melting point 1495 °C Boiling point 2927 °C Vanderwaals radius 0.125 nm ...
Synthesis of atomic and clusters or nanoparticles of cobalt samples To maintain solution environment under ultra-low temperature conditions at −60 °C, a mixed solvent system consisting of ultrapure water and absolute ethanol was selected for any dissolution or dispersion process with a volumetric...
Cobalt (Co, atomic number 27, in group 9 of the periodic table of the elements, atomic mass 58.9, density 8.9 g/cm3) is a shiny gray, hard, ductile, and brittle metal with magnetic properties. Cobalt prefer oxidation states (II) or (III), the former is most stable. Cobalt carbonyl ...
mass layoff on October 11, with 90 of its 113 employees getting a pink slip.One of the employees filed a class-action suit in federal court, alleging that Aleph failed to give 60 days notice of terminations, which a company with more than 100 employees is required to do under federal ...
(60) Crystal structures of four diene–cobalt complexes were examined in order to determine the mode of bonding. It was noted that the substituents on the C-1 and C-4 were displaced considerably out of the plane of the diene, an indication of possible rehybridization of those carbons upon ...
Cobalt'satomic number(number of protons in its nucleus) is 27. Itsrelative atomic massis 58.933200. An element's relative atomic mass equals itsmass(amount of matter) divided by1/12of the mass of an atom of carbon 12, the most abundant form of carbon. Cobalt has a density of 8.9 grams...
Atomic mass58.933 amu[1] Molar mass58.9331950 ± 0.0000050 g/mol[6] Molecular weight58.933 g/mol[7] Physical Properties ColorSilvery-blue, bluish-white[1, 4] Melting point/freezing point1495 °C, 2723 °F[1] Boiling point2927 °C, 5301 °F[1] ...