The Pauli exclusion principle should be explained. Concept Introduction: In order to describe completely the trajectories and movement of electron within an atom a total of four quantum numbers are used. The four quantum numbers are: Principal quantum number: It represents the principal electron shell and is given by symbol “n”. Orbital angular momentum quantum number: It determines the shape of the orbital and thereby the angular distribution and is given by symbol “l”. Magnetic quantum number: The number of orbitals and their orientation within a subshell is determined by magnetic quantum number and is represented by “m l ”. Electron spin quantum number: The direction of electron spin is designated by electron spin quantum number and is represented by “m s ”.

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Chapter 5, Problem 87APP

Interpretation Introduction

Interpretation: The Pauli exclusion principle should be explained.

Concept Introduction: In order to describe completely the trajectories and movement of electron within an atom a total of four quantum numbers are used. The four quantum numbers are:

Principal quantum number: It represents the principal electron shell and is given by symbol “n”.

Orbital angular momentum quantum number: It determines the shape of the orbital and thereby the angular distribution and is given by symbol “l”.

Magnetic quantum number: The number of orbitals and their orientation within a subshell is determined by magnetic quantum number and is represented by “m_l”.

Electron spin quantum number: The direction of electron spin is designated by electron spin quantum number and is represented by “m_s”.

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