| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| proton number of boron | 1.08 | 0.2 | 720 | 25 | 22 |
| proton | 1.4 | 1 | 5706 | 15 | 6 |
| number | 1.79 | 0.9 | 1141 | 3 | 6 |
| of | 0.54 | 0.5 | 6542 | 24 | 2 |
| boron | 1.62 | 1 | 2343 | 74 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| proton number of boron | 1.98 | 0.7 | 2201 | 98 |
