Chemistry - Atomic Structure Question with Solution | TestHub
ChemistryAtomic StructureSpectrumHard2 minQB
ChemistryHardinteger
Hydrogen atoms are excited to the 6th energy level and all possible transitions occur. The number of spectral lines of the emission spectrum that lie in the infrared region (Paschen, Brackett and Pfund series) is
Answer:
6
Solution:
Infrared lines end at , 4 or 5.
Ending at 5: 6 to 5. Ending at 4: 6 to 4, 5 to 4. Ending at 3: 6 to 3, 5 to 3, 4 to 3.
Total = .
Trap: counting only lines that start from gives 3.
Answer: 6.
Stream:JEESubject:ChemistryTopic:Atomic StructureSubtopic:Spectrum
⏱ 2mℹ️ Source: QB
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