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 Selenium Symbol Se Atomic Nº 34 Atomic weight 78.963
Oxidation Nº -2, 4, 6 State (RT) Solid Electronegativity 2.4 Shell 2,8,18,6
Structure Ar3d104s24p4 MP °C 217 BP °C 684.9 SG 4.79
Nº Isotopes 6 Isotope 80 Isotope AMU 79.916522 Abundance 49.6141
Discoverer Berzelius 1817  
Not histologically significant.
 
Alkali metals Alkali earth metals Transition metals Lanthanides Actinides Poor metals Metalloids Non metals Halogens Noble gases

 

Reference
Much of the data for each element was extracted, with permission, from TheMeter Periodic Table
Alessandri, Stefano
Periodic Table of the Elements
TheMeter Internet web site.

Uno Kask
Chemistry: Structure and Changes of Matter
Barnes and Noble Inc., New York, NY., U.S.A.

And the following Periodic tables on the internet:
Apsidium
Element Database
The Periodic Table of Elements on the Internet
Wikipedia under "Periodic Table" and individual elements
Webelements
KTF Periodic Table of the Elements
Dreamweaver Periodic Table

 


 

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