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Chemistry > Structure of Atom > Quantum Numbers

Structure of Atom

Quantum Numbers

Quantum numbers are numbers assigned to all the electrons in an atom and they describe certain characteristics of the electron. It is very IMPORTANT to understand Quantum Numbers in order to understand the Structure of Atom. In this chapter, we’ll learn everything about Quantum Numbers.

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Introduction to Quantum Numbers

Quantum Number

An atom consists of a large number of orbitals which are distinguished from each other on the basis of their shape, size and orientation in space. The orbital characteristics are used to define the state of an electron completely and are expressed in terms of three numbers as stated, Principal quantum number, Azimuthal quantum number and Magnetic quantum number and Spin Quantum number.

Quantum Numbers

Quantum number are those numbers that designate and distinguish various atomic orbitals and electrons present in an atom. A set of four numbers through which we can GET the complete INFORMATION about all the electrons in an atom, be it energy, location, space, type of orbital occupied, and even the orientation of that orbital is CALLED Quantum Numbers.