Coal and Petroleum


   
 
Carbon and its Compounds
Elemental carbon
 
Symbol: C
 
Atomic number : 6
 
Atomic mass: 12 (most common isotope)
 
Electronic configuration: 1s2,2s2,2p2
 
Position in the periodic table: Period II Group IV
 
 
Carbon occurs in the free state as well as combined state. The following schematic chart shows the occurrence of carbon in various forms.
 
 
 
                         Occurrence of carbon
 
 
     
   
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