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 Iron Symbol Fe Atomic Nº 26 Atomic weight 55.8452
Oxidation Nº 2, 3, 4, 6 State (RT) Solid Electronegativity 1.8 Shell 2,8,14,2
Structure Ar3d64s2 MP °C 1535 BP °C 2750 SG 7.894
Nº Isotopes 4 Isotope 56 Isotope AMU 55.934942 Abundance 91.7544
Discoverer Prehistoric Click for more information
Iron mordanted hematein gives intense black staining. It is also used with other dyes to stain elastic, and in Schmorl’s method for reducing substances. Iron containing deposits may be demonstrated with Perls’ or Tirman-Schmeltzer’s methods.
Alkali metals Alkali earth metals Transition metals Lanthanides Actinides Poor metals Metalloids Non metals Halogens Noble gases

 


 

 

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