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Dear student

If you have problem with understanding the Lewis structures, please start with simple molecules first like CO2, CH4 etc which do not have any resonating structures,
The given structure by you is of Ozone , which has three O atoms, So Ozone shows a variety of structures.
The structure given by you lacks the +ve and -ve sign on the Oxygen atom which has deficient and excess of electrons respectively.

Kindly refer to the following link:
https://www.meritnation.com/ask-answer/question/whats-the-difference-between-resonance-structure-and-resona/chemical-bonding-and-molecular-structure/9401525 

Regards  

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