The metal also reacts with chloride and iodide, but as a synthetic pathway other reactions are used:Ĭo (s) + Cl 2 (g) → CoCl 2 (s) (Cobalt (II) chloride)Ĭo (s) + I 2 (s) → CoL 2 (s) (Cobalt (II) Iodide) The metal reacts with bromine, and forming:Ĭo (s) + Br 2 (I) → CoBr 2 (s) (Cobalt (II) bromide) Water has little effect upon cobalt metal, The reaction between red hot cobalt metal and steam produces cobalt(II) oxide, CoO. If the reaction is carried out above 900☌, the cobalt(II) oxide CoO is formed: However, on heating the oxide Co 3O 4 is formed: Isotopes: 56 Co 57 Co 58 Co 59 Co 60 Co Isotope Hexagonal Close Packed (HCP) Reactivity of Cobalt ElementĮlectron affinity: 63.7 kJ/mol Nuclear Properties of Cobalt Ionization energies: 1st: 760.4 kJ.mol 2nd: 1648 kJ/mol 3rd: 3232 kJ/molĬovalent radius: 126☓ pm (Low spin), 150☗ pm (High spin)Ĭrystal structure: Hexagonal close packed The ionization potential of an atom: 7.81 Sound Speed: 4720 m/s Atomic Properties of Cobalt Element Magnetic susceptibility (x mol): +1860×10 -6 cm 3/mol Physical Properties of Cobaltĭensity: 8.90 g/cm 3 (In solid) 8.86 g/cm 3 (In Liquid at M.P) Thermal conductivity: 100 W/(m∙K) Electrical properties of CobaltĪ Electrical type: Conductor Magnetic Properties of Cobalt ElementĬurie point: 1394 K (1120.85 oC, 2049.53 oF) (above which Ferromagnetism vanishes) Cobalt Electron Configuration Thermal Properties of Cobalt Elementĭebye temperature: 385 K (111.85 oC, 233.33 oF)
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