NEET UG 2007 — Chemistry Inorganic Chemistry

2007mcqmedium

In which of the following pairs, the two species are iso-structural?

Official previous-year question

Held on 30 Apr 2007 · Verified 9 Jul 2026.

Options

A
$\mathrm{SO}_3^{2-}$ and $\mathrm{NO}_3^{-}$
B
$\mathrm{BF}_3$ and $\mathrm{NF}_3$
C
$\mathrm{BrO}_3^{-}$ and $\mathrm{XeO}_3$
D
$\mathrm{SF}_4$ and $\mathrm{XeF}_4$

Did you get this right?

Solution

Hybridisation of $\mathrm{Br}$ is $\mathrm{BrO}_3^{-}$ Total valence elctrons $=7+3 \times 6=25$ Charge $=-1$ Total $=25+1=26$ $=\frac{26}{8}=3(\mathrm{Q})+2(\mathrm{R})=5$ hybridization $=d s p^3$ hybridization of $\mathrm{Xe}$ in $\mathrm{XeO}_3$ Total valence electrons $=8+3 \times 6=26=\frac{26}{8}=3(Q)+2(R)=5$ Hybridization $=d s p^3$ The structure $\mathrm{BrO}_3^{-}$ and $\mathrm{XeO}_3$ is trigonal pyramidal. Caution Molecular structure of $\mathrm{NO}_3^{-}, \mathrm{NH}_3, \mathrm{NF}_3=$ trigonal pyramidal Molecular structure of $\mathrm{SO}_3^{2-}=$ Trigonal Planar Molecular structure of $\mathrm{SF}_4=$ Seesaw Molecular structure of $\mathrm{XeF}_4=$ Square Planar

Your note

NEET UG Inorganic Chemistry in other years

Inorganic Chemistry 2026 Inorganic Chemistry 2025 Inorganic Chemistry 2024 Inorganic Chemistry 2023 Inorganic Chemistry 2022 Inorganic Chemistry 2021 Inorganic Chemistry 2020 Inorganic Chemistry 2019 Inorganic Chemistry 2018 Inorganic Chemistry 2017 Inorganic Chemistry 2016 Inorganic Chemistry 2015

Keep practicing Inorganic Chemistry

Work through every NEET UG Inorganic Chemistry PYQ, year by year.

Browse all Chemistry topics

NEET UG 2007 — Chemistry Inorganic Chemistry

2007mcqmedium

In which of the following pairs, the two species are iso-structural?

Official previous-year question

Held on 30 Apr 2007 · Verified 9 Jul 2026.

Options

A
$\mathrm{SO}_3^{2-}$ and $\mathrm{NO}_3^{-}$
B
$\mathrm{BF}_3$ and $\mathrm{NF}_3$
C
$\mathrm{BrO}_3^{-}$ and $\mathrm{XeO}_3$
D
$\mathrm{SF}_4$ and $\mathrm{XeF}_4$

Did you get this right?

Solution

Your note

NEET UG Inorganic Chemistry in other years

Keep practicing Inorganic Chemistry

Work through every NEET UG Inorganic Chemistry PYQ, year by year.

Browse all Chemistry topics

NEET UG 2007 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

Your note

NEET UG Inorganic Chemistry in other years

More NEET UG Inorganic Chemistry questions

Other Chemistry topics for NEET UG

Physical Chemistry

Organic Chemistry

Keep practicing Inorganic Chemistry

NEET UG 2007 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

Your note

NEET UG Inorganic Chemistry in other years

More NEET UG Inorganic Chemistry questions

Other Chemistry topics for NEET UG

Physical Chemistry

Organic Chemistry

Keep practicing Inorganic Chemistry