| |
|
|
| |
 |
| Numerical 06 |
|
| 06. Using the Rydberg formula, calculate the wavelengths of the first four spectral lines in the Balmer series of the hydrogen spectrum. |
| |
| Suggested solution: |
| |
| The Rydberg formula is |
| |
 |
| |
| The wavelengths of the first four lines in the Balmer series correspond to transitions from ni = 3,4,5,6 to nf = 2. |
| |
| We know |
| |
 |
| |
 |
| |
| |
| |
 |
| |
| |
| |
 |
| |
| Substituting, |
| |
| ni = 3, 4, 5 and 6, we get |
| |
 |
| |
|
|
| |
|
|
| |
|
|
|
