Thebond length of C 2 based on the experimentally observed value 1.31 Å needs to be determined. Concept Introduction: Molecular orbital theory explained the bonding, magnetic and spectral properties of the molecule. It is based on the formation of molecular orbitals by the combination of atomic orbitals. On the basis of energy and stability these molecular orbitals can be further classified in three types: Bonding molecular orbitals (BMO): They have lesser energy than atomic orbital, therefore, more stable compare to atomic orbital. Antibonding molecular orbitals (ABMO): They have higher energy than atomic orbital therefore less stable compare to atomic orbital. Non-bonding molecular orbitals (NBMO): They have the same energy as atomic orbital. Molecular orbital diagrams represent the distribution of electrons in different molecular orbitals in increasing order of their energy. Hence lower energy molecular orbitals occupy first then only electron moves in higher energy orbitals.

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Chapter 3, Problem 89AP

Interpretation Introduction

Interpretation: Thebond length of C2 based on the experimentally observed value 1.31 Å needs to be determined.

Concept Introduction:

Molecular orbital theory explained the bonding, magnetic and spectral properties of the molecule. It is based on the formation of molecular orbitals by the combination of atomic orbitals. On the basis of energy and stability these molecular orbitals can be further classified in three types:

Bonding molecular orbitals (BMO): They have lesser energy than atomic orbital, therefore, more stable compare to atomic orbital.

Antibonding molecular orbitals (ABMO): They have higher energy than atomic orbital therefore less stable compare to atomic orbital.

Non-bonding molecular orbitals (NBMO): They have the same energy as atomic orbital.

Molecular orbital diagrams represent the distribution of electrons in different molecular orbitals in increasing order of their energy. Hence lower energy molecular orbitals occupy first then only electron moves in higher energy orbitals.

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