Periodic Table
Histological Application of Elements

  s series
Representative
Elements
d series
Transition Metals
p series
Representative
Elements
Noble
Gases
Group Ia IIa IIIb IVb Vb VIb VIIb VIII Ib IIb IIIa IVa Va VIa VIIa VIIIa
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Period 1 H   He
Period 2 Li Be   B C N O F Ne
Period 3 Na Mg   Al Si P S Cl Ar
Period 4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Period 5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Period 6 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Ti Pb Bi Po At Rn
Period 7 Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Uub Uut Uuq Uup Uuh Uus Uuo
  f series Transition Metals  
Period 6   Lanthanides Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu  
Period 7   Actinides Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr  
Element Cobalt Symbol Co Atomic Nº 27 Atomic weight 58.9332
Oxidation Nº 2, 3 State (RT) Solid Electronegativity 1.8 Shell 2,8,15,2
Structure Ar3d74s2 MP °C 1495 BP °C 2870 SG 8.9
Nº Isotopes 1 Isotope 59 Isotope AMU 58.9332 Abundance 100
Discoverer Brandt c.1735  
In calcium precipitation methods for alkaline phosphatases, the calcium ion deposited can be replaced with cobalt, then the phosphate replaced with sulphide to give a dark brown, insoluble deposit of cobalt sulphide. Otherwise, not histologically significant.
Alkali metals Alkali earth metals Transition metals Lanthanides Actinides Poor metals Metalloids Non metals Halogens Noble gases

 


 

 

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