Lewis dot structure or Electron dot structures

Electron Dot Structure:

 Lewis structures are also known as Lewis dot structures or electron dot structures. These structures provide a picture of bonding in molecules in terms of the shared pairs of electrons and octet rule.

In these structures elements symbol is in the centre and the dots around it shows the valence electrons.

Formation of Hydrogen Molecule
Atomic number of Hydrogen = 1
Number of valence electrons = 1

Formation of oxygen molecule

Atomic number =8

Distribution of electrons  =[2,6]

Valence electrons=6

Formation of Flourine molecule

Atomic number =9

Distribution of electrons =[2,7]

Valence electrons=7

Formation of oxygen molecule

Atomic number =7

Distribution of electrons  =[2,5]

Valence electrons=5

Formation of CH4 Molecule
Atomic number of Carbon = 6

Distribution of electrons= [2, 4]
Number of valence electrons = 4

Atomic number of Hydrogen = 1
Number of valence electrons = 1

Formation of H2S Molecule

Atomic number of Sulphur = 16 

Distribution of electrons=[2, 8, 6]

Number of valence electrons = 6

Formation of CO2 Molecule

Atomic number of Carbon = 6 

Distribution of electrons=[2, 4]

Number of valence electrons = 4

Atomic number of Oxygen = 8

Distribution of electrons= [2, 6]

Number of valence electrons = 6

Formation of Sulphur molecule

Atomic number =16

Distribution of electrons =[2,8,6]

Valence electrons=6