No. of dative bond maximum in :-NO2SO2SO3O3

To determine the maximum number of dative bonds in the given compounds, we need to identify the atoms that can act as electron pair donors and the atoms that can act as electron pair acceptors.

In NO2, the nitrogen atom has a lone pair of electrons that can form a dative bond with an electron-deficient species. However, there are no suitable electron-deficient atoms in the compound to form a dative bond.

In SO2, the sulfur atom has a lone pair of electrons that can form a dative bond. The oxygen atoms in SO2 are electron-deficient and can accept the lone pair from sulfur, forming dative bonds. Therefore, there can be a maximum of 2 dative bonds in SO2.

In SO3, the sulfur atom has a lone pair of electrons that can form a dative bond. Similar to SO2, the oxygen atoms in SO3 are electron-deficient and can accept the lone pair from sulfur, forming dative bonds. Therefore, there can be a maximum of 3 dative bonds in SO3.

In O3, the oxygen atoms do not have any available lone pairs of electrons to form dative bonds. Therefore, there are no dative bonds in O3.

To summarize, the maximum number of dative bonds in the given compounds are as follows: NO2: 0 SO2: 2 SO3: 3 O3: 0