Periodic Table of the Elements

 IA IIA IIIA IVA VA VIA VIIA VIIIA
   H  He
Li Be    B C N O F Ne
Na Mg IIIB IVB VB VI VIIB VIIIB IB IIB  Al Si P S Cl Ar
K Ca   Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
 Rb Sr                  Ag  Cd   Sn     I  Xe
 Cs  Ba        W        Pt Au  Hg    Pb        

 

 

 

 

 

 

 

Writing Formulae and Naming Compounds

Note that formulae are generally written with the elements ordered by electronegativity (roughly, elements on the left side of the Periodic table precede those on the right).

You should know about the Stock system of nomenclature for cations and ionic compounds.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Nuclear Atom

 Particle

Charge

Relative Mass

Mass

Electron (e-) -1 1/1840 9.11 x 10-28g
Proton (p or H+) +1 ª1 1.67 x 10-24g
Neutron (n) 0  ª1  1.67 x 10-24g

 

 

 

 

 

 

 

 

 

Some important terms which you must know are:

 

 

 

 

 

 

 

 

 

 

 

 Symbol Z A p n e-
14          
238U6+          
35Cl-          
 18O2-          

© R A Paselk

Last modified 26 Janaury 2011