Some of the properties of the two species, NO ₃⁻ and H ₃ O ⁺ are described below. Which one of them is correct?

Step-by-step solution

aligned & In NO ₃⁻, & H = 1 2 [5+0-0+1]=3 aligned Thus, in NO ₃⁻ , the central atom is sp ^2 hybridised and it has trigonal planar geometry. In H ₃ O ⁺ , H = 1 2 [6+3-1+0]=4 Thus, O is sp ^3 hybridised in H ₃ O ⁺ and H ₃ O ⁺ has pyramidal geometry due to the presence of one lone pair of electrons.