Quantum Numbers

                            Quantum Number

They are four quantum number Which describe the electron in an atom. 

Denoted

 They are denoted by n, l, m s, called the principal quantum number,azimutual quantum number, magnetic quantum number , and spin quantum number, respectively. 

1. Principal Quantum number 

 This quantum number describes the motion of an electron in an orbit and stands for the number of shells or orbits.

 Denoted 

 It is denoted by n. Greater the value of n greater is the volume of bulk of the electron density.

 Integral value

 The  Integral valueof n 1, 2 ,3 ,4......... It take value upto 7 in periodic table in a row.
 The higher value of n correspond to the higher energy, while lower value of n correspond lower energy. 

 Energy levels

 The energy levels L, M, N, O, P, and Q correspond to n= 1, 2, 3, 4, 5, 6, 7 . 

Determination of breaks

The value of n determines the number of breaks and discontinuties in the electron. These breaks are called nodes.
 The value of n describes the binding force and distance between ths nucleus and the orbit in which electron moves.