The ratio of the wavelengths of the last lines of the Balmer to Lyman series is
1. | 4:1 | 2. | 27:5 |
3. | 3:1 | 4. | 9:4 |
The wave number for the longest wavelength transition in the Balmer series of atomic hydrogen would be :
\(1 . 1 . 52 \times 10^{6} m^{- 1}\)
\(2 . 3 . 14 \times 10^{6} \left(cm\right)^{- 1}\)
\(3 . 15 . 2 \times 10^{6} m^{- 1}\)
\(4 . 1 . 52 \times 10^{6} \left(cm\right)^{- 1}\)
When an electron jumps from n=5 to n=1 in a hydrogen atom, the number of spectral lines obtained is
1. | 3 | 2. | 4 |
3. | 6 | 4. | 10 |
The wavelength of light emitted when the electron in a H atom undergoes the transition from an energy level with n = 4 to an energy level with n = 2, is :
1. 586 mm
2. 486 nm
3. 523 nm
4. 416 pm
The electronic transition in the hydrogen atom that emits maximum energy is:
1. 2 1
2. 1 4
3. 4 3
4. 3 2