Question

Some of the properties of the two species, $NO_3^-$ and ${H_3O^+}$ are described below. Which one of them is correct?

• A. Isostructural with same hybridization for the central atom
• B. Isostructural with different hybridization for the central atom
• C. Similar in hybridization for the central atom with different structures
• D. Dissimilar in hybridization for the central atom with different structures

Answer 1

Answer: (D)

Dissimilar in hybridization for the central atom with different structures

Answer 2

The correct answer is Option D) Dissimilar in hybridization for the central atom with different structures

In ${NO_3 , H = \frac{1}{2} [ 5 + 0 - 0 + 1 ] = 3}$
Thus, in ${NO^{-}_{3}}$, the central atom is sp2 hybridized and it has trifocal planar geometry.
In ${H_3 O^{+}}$ ,
${H = \frac{1}{2} [ 6 + 3 - 1 +0 ] = 4 }$
Thus, $O$ is $sp^3$ hybridised in ${H_3O^{+}}$ and ${H_3O^{+}}$ has pyramidal geometry due to the presence of one lone pair of electrons.