Question:
Which one of the following pairs consists of only paramagnetic species?
Which one of the following pairs consists of only paramagnetic species?
Updated On: Jun 8, 2024
- $[O_2, NO]$
- $[O^{+}_{2}, NO^{2-}_{2}]$
- [CO, NO]
- $[NO, NO^+]$
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
According to MOT, 02(16)
$s 1s^2, s^* 1s^2, s2s^2, s^* 2s^2, s 2p^2_z \Bigg\{\, ^{\pi2p^2_x}_{\pi2p^2_y},\Bigg\{\, ^{\pi^*\, 2p^1_x}_{\pi^*\, 2p^1_y}, $
Electronic configuration of $O_2 $shows the presence of two unpaired electrons, so it is paramagnetic in nature.
NO (15)
$s 1s^2, s^* 1s^2, s2s^2, s^* 2s^2, s 2p^2_z \Bigg\{\, ^{\pi2p^2_x}_{\pi2p^2_y},\Bigg\{\, ^{\pi^*\, 2p^1_x}_{\pi^*\, 2p^0_y}$
Electronic configuration of NO shows the presence of one
unpaired electron, so it is also paramagnetic in nature.
$s 1s^2, s^* 1s^2, s2s^2, s^* 2s^2, s 2p^2_z \Bigg\{\, ^{\pi2p^2_x}_{\pi2p^2_y},\Bigg\{\, ^{\pi^*\, 2p^1_x}_{\pi^*\, 2p^1_y}, $
Electronic configuration of $O_2 $shows the presence of two unpaired electrons, so it is paramagnetic in nature.
NO (15)
$s 1s^2, s^* 1s^2, s2s^2, s^* 2s^2, s 2p^2_z \Bigg\{\, ^{\pi2p^2_x}_{\pi2p^2_y},\Bigg\{\, ^{\pi^*\, 2p^1_x}_{\pi^*\, 2p^0_y}$
Electronic configuration of NO shows the presence of one
unpaired electron, so it is also paramagnetic in nature.
Was this answer helpful?
1
0
Top Questions on Chemical bonding and molecular structure
- Given below are two statements:
Statement I: The number of pairs among [SiO₂, CO₂], [SnO, SnO₂], [PbO, PbO₂] and [GeO, GeO₂], which contain oxides that are both amphoteric is 2.
Statement II: BF₃ is an electron deficient molecule, can act as a Lewis acid, forms adduct with NH₃ and has a trigonal planar geometry.
In the light of the above statements, choose the correct answer from the options given below:- JEE Main - 2026
- Chemistry
- Chemical bonding and molecular structure
From the given following (A to D) cyclic structures, those which will not react with Tollen's reagent are :
- JEE Main - 2026
- Chemistry
- Chemical bonding and molecular structure
Compound 'P' undergoes the following sequence of reactions : (i) NH₃ (ii) $\Delta$ $\rightarrow$ Q (i) KOH, Br₂ (ii) CHCl₃, KOH (alc), $\Delta$ $\rightarrow$ NC-CH₃. 'P' is :
- JEE Main - 2026
- Chemistry
- Chemical bonding and molecular structure
- Given below are two statements: Statement I: The halogen that makes longest bond with hydrogen in HX, has the smallest covalent radius in its group.
Statement II: A group 15 element's hydride \(EH_3\) has the lowest boiling point among corresponding hydrides of other group 15 elements. The maximum covalency of that element \(E\) is 4.
In the light of the above statements, choose the correct answer from the options given below.- JEE Main - 2026
- Chemistry
- Chemical bonding and molecular structure
The formal charges on the atoms marked as (1) to (4) in the Lewis representation of \( \mathrm{HNO_3} \) molecule respectively are
- JEE Main - 2026
- Chemistry
- Chemical bonding and molecular structure
View More Questions
Questions Asked in KEAM exam
- Which among the following has the highest molar elevation constant?
- KEAM - 2025
- Colligative Properties
- The formula of Ammonium phosphomolybdate is
- KEAM - 2025
- coordination compounds
- Which is a Lewis acid?
- KEAM - 2025
- Acids and Bases
- Hardness of water is estimated by titration with
- KEAM - 2025
- Solutions
- Which of the following gases has the lowest solubility in water at 298 K?
- KEAM - 2025
- Solutions
View More Questions
Concepts Used:
Chemical Bonding and Molecular Structure
Such a group of atoms is called a molecule. Obviously, there must be some force that holds these constituent atoms together in the molecules. The attractive force which holds various constituents (atoms, ions, etc.) together in different chemical species is called a chemical bond.
Types of Chemical Bonds:
There are 4 types of chemical bonds which are formed by atoms or molecules to yield compounds.
- Ionic Bonds - Ionic bonding is a type of chemical bonding which involves a transfer of electrons from one atom or molecule to another.
- Covalent Bonds - Compounds that contain carbon commonly exhibit this type of chemical bonding.
- Hydrogen Bonds - It is a type of polar covalent bonding between oxygen and hydrogen wherein the hydrogen develops a partial positive charge
- Polar Bonds - In Polar Covalent chemical bonding, electrons are shared unequally since the more electronegative atom pulls the electron pair closer to itself and away from the less electronegative atom.
Factors Affecting Bond Enthalpy in Chemical Bonding:
- Size of the Atom
- Multiplicity of Bonds
- Number of Lone Pair of Electrons Present
- Bond Angle