Question

why does no2 dimerises

Answer 1

Hey !!

NO₂ contains odd number of valence electrons. It behaves as a typical, off molecule. On dimerization it is converted to stable N₂O₄ molecule with even number of electrons

NO₂ + NO₂ -----> N₂O₄

Good luck !!

Answer 2

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• ❤.. ${NO2}$ containd odd number of valence electrons.
• ❤.. It behaves as a typical odd molecule.
• ❤.. On dimerisation, it is converted to stable${N2O4}$ molecule with even number of electrons.