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TYPES
OF COVALENT BOND
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| There are three types of covalent bond depending upon the number of shared electron pairs. | |||
 SINGLE
COVALENT BONDDOUBLE
COVALENT BONDTRIPLE
COVALENT BOND |
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SINGLE
COVALENT BOND
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| 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( ) |
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| Examples: | |||
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| In single bond formation each atom provide one electron. | |||
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DOUBLE
COVALENT BOND
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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 ( )For latest information , free computer courses and high impact notes visit : www.citycollegiate.com |
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| Examples: | |||
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TRIPLE
COVALENT BOND
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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 (
). |
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| Examples: | |||
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POLAR
COVALENT BOND
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| 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 |
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| Examples: | |||
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NON-POLAR
BOND
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| 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. |
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| Examples: | |||
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H
- H
Cl - Cl F - F |
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| For latest information , free computer courses and high impact notes visit : www.citycollegiate.com | |||