JEE Main20208 Jan 2020Morning ShiftChemistryStructure of AtomActual
For the Balmer series, in the spectrum of H atom , v - = R H 1 n 1 2 - 1 n 2 2 , the correct statements among I to I V are, I As wavelength decreases, the lines in the series converge. I I The integer n 1 is equal to 2 / I I I The lines of the longest wavelength correspond to n 2 = 3 . I V The ionization energy of hydrogen can be calculated from the wave number of these lines.
Options
- AI , I I I , I V
- BI , I I , I I I
- CI , I I , I V
- DI I , I I I , I V
Correct answer
B. I , I I , I I I
Step-by-step solution
I ,   II   and   III option is correct. ν - = R H 1 n 1 2 − 1 n 2 2 For balmer series, n 1 = 2 For the longest wavelength, V ¯ , n 2 = 3 .