| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sulfate ion resonance structures | 1.61 | 0.5 | 1635 | 4 | 32 |
| sulfate | 0.59 | 0.8 | 3173 | 17 | 7 |
| ion | 1.65 | 0.8 | 3345 | 61 | 3 |
| resonance | 0.33 | 0.7 | 335 | 29 | 9 |
| structures | 0.28 | 1 | 4751 | 81 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sulfate ion resonance structures | 0.02 | 1 | 3314 | 92 |
