Elements Of Physical Chemistry
Elements Of Physical Chemistry
7th Edition
ISBN: 9780198727873
Author: ATKINS, P. W. (peter William), De Paula, Julio
Publisher: Oxford University Press
Question
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Chapter 9, Problem 9A.1ST
Interpretation Introduction

Interpretation:

The bonding pattern of the Oxygen molecule has to be predicted.

Concept introduction:

Molecular orbital theory is a method for describing the electronic structure of molecules using quantum mechanics.

Bond order: =Nb-Na2

Electrons are not assigned to individual bonds between atoms, but are treated as moving under the influence of the nuclei in the whole molecule.

Expert Solution & Answer
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Explanation of Solution

The electronic configuration of oxygen (Z=8) in the ground state is 1s2 2s2 2p4

Each oxygen atoms has 8 electrons, hence, in O2 molecule there are 16 electrons.

Therefore, the electronic configuration of O2 is as follows

O2:KK(σ2s)2*2s)22pz)22px)2=(π2py)2*2px)1=(π2py)1here1s)2*1s)2partoftheconfigurationKK

Bond order=Nb-Na2=8-42=2

Elements Of Physical Chemistry, Chapter 9, Problem 9A.1ST

                    Figure -1

Bond order=Nb-Na2=8-42=2

One σ(O2pz, O2pz) bond and one π(O2px, O2px) bond.

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