| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| iron oxidation state colours | 0.32 | 0.4 | 1258 | 87 | 28 |
| iron | 0.12 | 0.2 | 5622 | 94 | 4 |
| oxidation | 1.62 | 1 | 282 | 76 | 9 |
| state | 1.52 | 0.5 | 7732 | 33 | 5 |
| colours | 0.25 | 1 | 445 | 75 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| iron oxidation state colours | 0.97 | 0.5 | 8064 | 52 |
