| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| rydberg constant for energy | 1.79 | 0.5 | 2743 | 40 | 27 |
| rydberg | 1.5 | 0.7 | 3175 | 95 | 7 |
| constant | 1.44 | 1 | 9060 | 56 | 8 |
| for | 0.2 | 0.5 | 8900 | 54 | 3 |
| energy | 0.91 | 0.5 | 5807 | 75 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| rydberg constant for energy | 0.84 | 0.9 | 2172 | 54 |
