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27 Co Cobalt (plaintext) |
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H He |
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Li Be B C N O F Ne |
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Na Mg Al Si P S Cl Ar |
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K Ca Sc Ti V Cr Mn Fe[Co]Ni Cu Zn Ga Ge As Se Br Kr |
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Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe |
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Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn |
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Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og |
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Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu |
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Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr |
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| 27 ____ | |
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| / ___|___ | |
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| | | / _ \ | |
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| | |__| (_) | | |
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| \____\___/ | |
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| | |
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| Cobalt | |
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| 58.93319 u | |
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Wiki Article: Cobalt |
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Electron Configuration: [Ar]4s2 3d7 |
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Electronegativity: 1.88 |
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Atomic Radius: 192 pm |
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Ionization Energy: 7.881 eV |
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Electron Affinity: 0.661 eV |
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Oxidation States: +3, +2 |
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Standard State: Solid |
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Melting Point: 1768 K |
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Boiling Point: 3200 K |
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Density: 8.86 g/cm3 |
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Family: Transition metal |
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Year Discovered: 1735 |
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Number of Neutrons: 32 |
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Number of Protons: 27 |
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Number of Electrons: 27 |
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Number of Valence: |
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Valency: |
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Group: 9 |
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Period: 4 |
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Shell: d-shell |
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Specific Heat: 0.421 J/g K |
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Radioactive: 0 |
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Occurrence: Natural |
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Source: White dwarf supernovae |
