Class 11 Chemistry Organic Chemistry Unique Properties Of Carbon

Unique properties of carbon

  • TETRAVALENCY

It is a characteristic property of Carbon atom by virtue of which it can form four covalent bonds.

Atomic Number =6

1s2, 2s2,2px1,2py2,2pz0

Valency =+4 or -4

It mainly forms covalent compounds.

  • CATENATION

 “The property of forming bonds with atoms of same element and give rise to long chains, branched or un-branched chains.”

In 14th group the Carbon –Carbon bond requires bond dissociation energy equal to 335 KJ. The Sulphur –Sulphur bond requires energy in order of 220kJ.But, the maximum catenation is shown by carbon as it forms strong bond with atom of its own kind.

IMPORTANT FEATURE OF π BONDS                

  1. In C2H4 , the two un-hybridized orbital forming bond are parallel to each other. So, they restrict the molecule in planar shape.
  2. Because of sidewise overlapping, rotation of one CH2 group with respect to other is hindered, as rotation will break bond. Therefore, only 2 forms are possible.
  3. For example: C2H2Cl2

 Class_11_Concepts_Of_Chemistry_Structure_Of_CH2Cl2

 (pi) bonds are more reactive sites, as they are placed above and below the plane of bonding atoms. So, more exposed to attacking agent.

Find

Class_11_Concepts_Of_Chemistry_Find_NumberOf_Sigma_&_Pi_Bond

 Write hybridization

Class_11_Concepts_Of_Chemistry_Write_Hybridization

Write hybridization

Class_11_Concepts_Of_Chemistry_Write_Hybridization_1

Write shapes

    Class_11_Concepts_Of_Chemistry_Write_Shapes                                                       

Problem 1:-

Q: Rewrite as bond line :

1.

   Class_11_Concepts_Of_Chemistry_Rewriting_Bond_Line                 

 

2. 

 Class_11_Concepts_Of_Chemistry_Rewriting_Bond_Line_1

3.

   Class_11_Concepts_Of_Chemistry_Rewriting_Bond_Line_2                 

 

4.

Class_11_Concepts_Of_Chemistry_Rewriting_Bond_Line_3

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