Question

Calculate formal charge on ozone for all 3 oxygen and draw its lewis dot structure ??????

Answer 1

Formal Charge = No. of Valence electron - no. of unpaired electron - 1/2(No. of bonded electron)

For O1 = 6 - 4 - 1/2(4)

= 0

For O2 = 6 -2 - 1/2(6)

= +1

For O3 = 6 - 6 - 1/2(2)

= -1

{ For Diagram Refer The Attached Image }

Answer 2

Formal Charge = (Number of valence electrons) - (Non-bonding electrons) - (12 Bonding electrons)
Atomic number of oxygen = 8
Electronic configuration = 1s2 2s2 2p4
Valence electrons on oxygen atom = 6 
Non bonding electrons = Number of electrons present in lone pair
Bonding electrons = Number of bonds formed

For first oxygen atom (leftmost)
Formal Charge = 6 - 4 - 4/2 = 0

For second oxygen atom (middle)
Formal Charge = 6 - 2 - 6/2 = +1

For third oxygen atom (rightmost)
Formal Charge = 6 - 6 - 2/2 = -1