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Some of the properties of the two species, NO3− and H3O+ are described below. Which one of them is correct?

1. Similar in hybridization for the central atom with different structures.
2. Dissimilar in hybridization for the central atom with different structures.
3. Isostructural with same hybridization for the central atom.
4. Isostructural with different hybridization for the central atom.

Correct answer: Dissimilar in hybridization for the central atom with different structures.

Solution

NO3− has sp2 hybridization with a trigonal planar structure, while H3O+ has sp3 hybridization with a pyramidal structure. Thus, they differ in both hybridization and structure.

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