Question 1
Paper 2Easy5 marksA student observes light from a hydrogen discharge tube using a spectroscope. Four emission lines are measured.
| Wavelength / nm |
|---|
| 656.3 |
| 486.1 |
| 434.0 |
| 410.2 |
(a)[1]
State whether the spectrum consists of continuous or line emission.
(b)[1]
State what happens to an electron when one of these photons is emitted.
(c)[2]
Determine which photon, with wavelength 656.3 nm or 434.0 nm, has the greater energy. Justify your answer.
(d)[1]
As the wavelength decreases through the values in the table, state how the spacing between successive spectral lines changes.