The magnetic properties and bond order of N 2 2 − are to be determined. Concept introduction: The combination of two atomic orbitals leads to the formation of a bond and an antibonding molecular orbital. Orbitals that lie on internuclear axis combine to form sigma ( σ ) molecular orbitals, and orbitals parallel to each other combine to form π molecular orbitals. The molecular orbital formed by the combination of 1s orbital is a bonding molecular orbital designated as σ 1 s , and an antibonding molecular orbital designated as σ ∗ 1 s . The 2s orbital forms corresponding molecular orbitals. Bond order is the difference between the number of antibonding electrons and the number of bonding electrons and dividing the obtained number by two.

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Chapter 9.7, Problem 1PPA

Interpretation Introduction

Interpretation: The magnetic properties and bond order of N22−

are to be determined.

Concept introduction:

The combination of two atomic orbitals leads to the formation of a bond and an antibonding molecular orbital. Orbitals that lie on internuclear axis combine to form sigma (σ

) molecular orbitals, and orbitals parallel to each other combine to form π

molecular orbitals.

The molecular orbital formed by the combination of 1s orbital is a bonding molecular orbital designated as σ1s, and an antibonding molecular orbital designated as σ∗1s. The 2s orbital forms corresponding molecular orbitals.

Bond order is the difference between the number of antibonding electrons and the number of bonding electrons and dividing the obtained number by two.

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