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.