#Full electron configuration of cobalt skin

#Full electron configuration of cobalt skin

Routes of Exposure: Inhalation Ingestion Skin and/or eye contact.Vapor Pressure = C Regulatory / Health.Flammablity Class: Non-combustible solid (except as dust).Enthalpy of Vaporization: 382.4 kJ/mole.Enthalpy of Atomization: 26.8 kJ/mole 25☌.Description: Tough silver-white transition metal.Conductivity Electrical: 0.172 10 6/cm Ω.Coefficient of lineal thermal expansion/K -1: 13.36E -6.Valence Electron Potential (-eV): 38.7 Physical Properties of Cobalt.Incompatibilities: Strong oxidizers, ammonium nitrate.Electronegativity: 1.88 (Pauling) 1.7 (Allrod Rochow).Electrochemical Equivalent: 1.0994g/amp-hr.Valence Electrons: 3d 7 4s 2 Chemical Properties of Cobalt.Number of Neutrons (most common/stable nuclide): 32.Number of Electrons (with no charge): 27.Electrons per Energy Level: 2,8,15,2 Shell Model.Electron Configuration: 1s 2 2s 2p 6 3s 2p 6d 7 4s 2.Cross Section (Thermal Neutron Capture)σ a/ barns : 37.2.Swedish: Kobolt Atomic Structure of Cobalt.Series: Transition Metals Cobalt's Name in Other Languages.Common Chemical Compounds of Cobalt Overview of Cobalt.In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies. Common chemical compounds are also provided for many elements. Skip to site menu on this page Periodic Table of Elements Element Cobalt - CoĬomprehensive data on the chemical element Cobalt is provided on this page including scores of properties, element names in many languages, most known nuclides of Cobalt.Coenzyme B12 provides the C-Co bond, which is part of the reactions. The absence or low presence of cobalt can cause anemia.Ĭobalamin proteins use the corrin ring to hold the cobalt unit. It makes up cobalamin, also called vitamin B12. Biological function of cobaltĬobalt is needed in all animals and in humans as well. In the absence of nuclear war, the risk arises from improper maintenance or handling of radiotherapy units. This is why certain nuclear weapons called dirty bombs are created. If a nuclear confrontation were to occur, the emission of neutrons could convert iron into Co-60, greatly increasing the consequences of radioactive contamination.Ingestion of Co-60 can cause a certain amount to accumulate in the tissues, which is eliminated slowly. Co-60 is radioactive, exposure to its radiation can cause cancer.Generally, cobalt compounds should be handled with care as the metal has mild toxicity. Finely separated metallic cobalt powder is flammable.For this reason, these fonts have ceased to be popular in the West. The Cobalt-60 source is composed of a useful life of about 5 years, but when this duration is exceeded, the isotope is still quite radioactive. Metal normally develops a fairly fine dust which makes radiation shielding difficult. The source used has a radius of 2 cm and produces the presence of penumbral parts that diffuse the radiation that surrounds its direction. it is therefore difficult to be able to encapsulate it to avoid radioactive contamination.Ĭobalt-60 generates two gamma rays that have energies of 1.33 MeV and 1.17 Mev. Isotopes lighter than the stable Co-59 are primarily decayed by electron capture creating iron isotopes, while those heavier than the stable isotope are decayed by beta emission giving rise to nickel isotopes.Ĭobalt-60 is used in radiotherapy instead of radium because of its economic price and also because radium decays into radon and it is a radioactive element in the form of a gas. The atomic mass of isotopes of this element is between 50 amu and 73 amu. Cobalt also has four meta-states, each of which has half-lives of less than 15 minutes. The other radioactive isotopes have half-lives of less than 18 hours and almost all of them less than one second. The most stable are Co-56, Co-57 and Co-60 whose half-lives are 70.86 days, 271.79 days and 5.2714 years respectively. The boiling point of this element is 2927.85 degrees Celsius or 3200 Kelvin and the melting point is 1495.85 degrees Celsius or 1768 Kelvin. This chemical element has a gray tint, is metallic and belongs to the group of transition metals, its atomic number is 27 and it is represented by the symbol Co. The covalent radius of cobalt is 126 pm, the Bohr radius or atomic radius is 152 pm, while the average radius is 135 pm.Ĭobalt is solid in its natural form, specifically a ferromagnetic solid.