TYPES OF COVALENT BOND
 
 
 
  There are three types of covalent bond depending upon the number of shared electron pairs.
  SINGLE COVALENT BOND
  DOUBLE COVALENT BOND
  TRIPLE COVALENT BOND
SINGLE COVALENT BOND
 
  A covalent bond formed by the mutual sharing of one electron pair between two atoms is called a "Single   Covalent bond."
  It is denoted by single short line()
  Examples:
  In single bond formation each atom provide one electron.
DOUBLE COVALENT BOND
 
  A covalent bond formed between two atoms by the mutual sharing of two electron pairs is called a "double   covalent bond". It is denoted by double short line ()
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  Examples:
TRIPLE COVALENT BOND
 
  A covalent bond formed by the mutual sharing of three electron pairs is called a "Triple covalent bond". It is   denoted by triple short line ( ).
  Examples:
POLAR COVALENT BOND
 
  A covalent bond formed between two different atoms is known as Polar covalent bond.
  For example when a Covalent bond is formed between H and Cl , it is polar in nature because Cl is more   electronegative than H atom . Therefore, electron cloud is shifted towards Cl atom. Due to this reason a   partial -ve charge appeared on Cl atom and an equal +ve charge on H atom
  Examples:
NON-POLAR BOND
 
  A covalent bond formed between two like atoms is known as Non-polar bond. Since difference of
  electro negativity is zero therefore, both atoms attract electron pair equally and no charge appears on
  any atom and the whole molecule becomes neutral.
  Examples:
H - H
Cl - Cl
F - F
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