Brackett series is obtained . This series lies in infrared region .
( v ) Pfund Series When electron jumps from n = 6,7,8 , … orbit to n = 5 orbit , then a line of Pfund series is obtained .
This series lies in infrared region .
Wave Model
It is based on wave mechanics . Quantum numbers are the numbers required to completely specify the state of the electrons .
In the presence of strong magnetic field , the four quantum number are ( i ) Principle quantum number ( n ) can have value 1,2 , … ∞ ( ii ) Orbital angular momentum quantum number l can have value 0,1 , 2 , … ,( n – 1 ). ( iii ) Magnetic quantum number ( m e ) which can have values – I to I .
( iv ) Magnetic spin angular momentum quantum number ( m s ) which can have only two value + 1 / 2 .