Question

Write resonance structure of Ozone or sulphurdioxide.

Answer 1

The resonance structure of Ozone is as follows:

Answer 2

In both molecules, the two terminal oxygen atoms are shown 1 negative charge and zero - OR  both atoms are shown with 1/2 charge in an equivalent manner by a dotted line between the two terminal atoms.

              +      -                      -      + 
   O === O --- O      <------>    O ---  O  === O