Which of the two ions from the list given… - NEET UG 2011 Chemistry PYQ

NEET UG 2011 — Chemistry Inorganic Chemistry

2011mcqmedium

Which of the two ions from the list given below, have the geometry that is explained by the same hybridisation of orbitals, $\mathrm{NO}_2^{-}, \mathrm{NO}_3^{-}, \mathrm{NH}_2^{-}, \mathrm{NH}_4^{+}, \mathrm{SCN}^{-}$ ?

Official previous-year question

Held on 30 Apr 2011 · Verified 9 Jul 2026.

Options

A
$\mathrm{NH}_4^{+}$ and $\mathrm{NO}_3^{-}$
B
$\mathrm{SCN}^{-}$ and $\mathrm{NH}_2^{-}$
C
$\mathrm{NO}_2^{-}$ and $\mathrm{NH}_2^{-}$
D
$\mathrm{NO}_2^{-}$ and $\mathrm{NO}_3^{-}$

Did you get this right?

Solution

$\begin{array}{ll} \mathrm{NO}_2^{-} & \rightarrow s p^2 \\ \mathrm{NO}_3^{-} & \rightarrow s p^2 \\ \mathrm{NH}_2^{+} & \rightarrow s p^3 \end{array}$ $\begin{array}{ll} \mathrm{NH}_4^{-} & \rightarrow s p^3 \\ \mathrm{SCN}^{-} & \rightarrow s p \end{array}$ $\therefore \quad \mathrm{NO}_2^{-}$ and $\mathrm{NO}_3^{-}$ both have the same hybridisation. NEET 2011 Chemistry, Chemical Bonding and Molecular Structure — solution figure

$\therefore\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$ has minimum number of unpaired electrons and thus, minimum paramagnetic behaviour.

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

More NEET UG Inorganic Chemistry questions

Which of the following is the most electronegative element?

2026easy

Out of the following complex compounds, which of the compound will be having the minimum conductance in solution?

2025medium

Which among the following electronic configurations belong to main group elements? A. $[\mathrm{Ne}] 3 \mathrm{~s}^1$ B. $[\operatorname{Ar}] 3 \mathrm{~d}^3 4 \mathrm{~s}^2$ C. $[\mathrm{Kr}] 4 d^{10} 5 s^2 5 p^5$ D. $[\mathrm{Ar}] 3 \mathrm{~d}^{10} 4 \mathrm{~s}^1$ E. $[R n] 5 f^0 6 d^2 7 s^2$ Choose the correct answer from the option given below:

2025easy

Match List-I with List-II $\begin{array}{|l|l|l|l|}\hline & \text{List - I} & & \text{List - II} \\\hline \text{A}. & \text{Haber process} & \text{(i)} & \text {Fe catalyst} \\\hline \text{B.} & \text{Wacker oxidation} & \text{(ii)} & \mathrm{PdCl}_2 \\\hline \text{C.} & \text{Wilkinson catalyst} & \text{(iii)} & \left[\left(\mathrm{PPh}_3\right)_3 \mathrm{RhCl}\right] \\\hline \text{D.} & \text{Ziegler catalyst} & \text{(iv)} & \mathrm{TiCl}_4 \text{ with } \mathrm{Al}\left(\mathrm{CH}_3\right)_3 \\\hline\end{array}$ Choose the correct answer from the options given below :

2025medium

Identify the correct orders against the property mentioned (A) $\mathrm{H}_2 \mathrm{O}\gt\mathrm{NH}_3\gt\mathrm{CHCl}_3$ - dipole moment (B) $\mathrm{XeF}_4\gt\mathrm{XeO}_3\gt\mathrm{XeF}_2-$ number of lone pairs on central atom (C) $\mathrm{O}-\mathrm{H}\gt\mathrm{C}-\mathrm{H}\gt\mathrm{N}-\mathrm{O}-$ bond length (D) $\mathrm{N}_2\gt\mathrm{O}_2\gt\mathrm{H}_2$ - bond enthalpy Choose the correct answer from the options given below :

2025medium

View all Inorganic Chemistry questions

Keep practicing Inorganic Chemistry

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

Browse all Chemistry topics

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