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Solution


Q.

The spectral series which corresponds to the electronic transition from the level n2 = 5, 6, ... to the level n1 = 4 is     [2024]
1 Pfund series  
2 Brackett series  
3 Lymann series  
4 Balmer series  

Ans.

(2)

Brackett series corresponds to the electronic transition from n2=5,6... to n1=4 level.