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 Nitrogen Symbol N Atomic Nº 7 Atomic weight 14.00672
Oxidation Nº ±1, ±2, ±3, 4, 5 State (RT) Gas Electronegativity 3.0 Shell 2,5
Structure 1s22s22p3 MP °C -209.9 BP °C -195.8 SG 0.808
Nº Isotopes 2 Isotope 14 Isotope AMU 14.003074 Abundance 99.6327
Discoverer Rutherford 1772 Click for more information
Nitrogen compounds are of fundamental importance. Amino groups are present in both tissues and dyes, and take part in numerous histological reactions. Many dyes we use are based on the azo (-N=N-) and other nitrogen containing chromophores.
Alkali metals Alkali earth metals Transition metals Lanthanides Actinides Poor metals Metalloids Non metals Halogens Noble gases

 

Reference
Much of the data for this page 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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Last updated May 2005.