| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| nearly free electron approximation | 0.74 | 0.9 | 3679 | 62 | 34 |
| nearly | 0.58 | 0.1 | 3643 | 21 | 6 |
| free | 1.09 | 0.8 | 1085 | 15 | 4 |
| electron | 0.67 | 0.8 | 5566 | 49 | 8 |
| approximation | 0.97 | 0.2 | 7855 | 51 | 13 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| nearly free electron approximation | 1.17 | 0.9 | 9853 | 2 |
| nearly free electron approximation pdf | 0.56 | 0.9 | 1672 | 27 |
| what is free electron approximation | 0.16 | 0.9 | 6985 | 57 |
| one-electron approximation | 0.65 | 0.3 | 1595 | 84 |
| nearly free electron model | 0.14 | 1 | 479 | 17 |
| single active electron approximation | 1.97 | 0.1 | 4773 | 9 |
| nearly free electron theory | 0.07 | 0.2 | 4441 | 93 |
| free electron in chemistry | 0.36 | 0.4 | 4139 | 49 |
| free-electron | 0.3 | 0.1 | 6092 | 80 |
| free electron theory pdf | 1.65 | 0.5 | 7162 | 25 |
