Molecular Orbital Theory (MOT)

IMPORTANT

Molecular Orbital Theory (MOT): Overview

This topic covers concepts, such as, Molecular Orbitals Configurations of Homonuclear Diatomic Species, Molecular Orbital Theory, Molecular Orbital Energy Level Diagram of NO & Comparison of Valence Bond Theory and Molecular Orbital Theory etc.

Important Questions on Molecular Orbital Theory (MOT)

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IMPORTANT

The following pairs of compounds can be distinguished by which of the following tests:

 (i) Ethylamine and aniline

(ii) Aniline and N-methylaniline

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The number and type of bonds between two carbon atoms in calcium carbide are

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Which of the following species has four lone pairs of electrons?

                                                                                                                                                                                                                               

EASY
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The bond order in   NO is 2.5 while that in   NO +  is 3. Which statement is true for these two species:

 

 

MEDIUM
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The correct molecular orbital diagram for F2 molecule in the ground state is

HARD
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The true statements from the following

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For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap of two 2pz orbitals is(are)

EASY
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ABMO of the molecule is destabilise the energy.

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In chemical bonding theory, an _____ orbital is a type of molecular orbital that weakens the chemical bond.

EASY
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When the molecule is destabilise?

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Why the sigma orbital in the hydrogen molecule has a lower energy than the 1s atomic orbital of the hydrogen atom?

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Explain why an electron in the bonding molecular orbital has a lower energy than an electron in the atomic orbitals of either of the separated atom?

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What is stabilization energy regarding molecular orbitals?

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Assertion. Molecular nitrogen is less reactive than molecular oxygen.

Reason. The bond length of N2 is shorter than that of oxygen

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Assertion : H2 molecule is more stable than HeH molecule.

Reason : The anti bonding electron in the molecule destabilises it.

EASY
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Write the salient features of molecular orbitals.

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Write any three differences between molecular orbitals and atomic orbitals.

EASY
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What will be the bond order of the species with electronic configuration  1s2 2s2 2p5?(one/two/three)

HARD
IMPORTANT

Explain the magnetic nature of oxygen molecule.