| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| hydrogen outer shell electrons | 0.64 | 1 | 7026 | 27 | 30 |
| hydrogen | 0.74 | 0.9 | 1112 | 41 | 8 |
| outer | 1.78 | 0.5 | 9997 | 46 | 5 |
| shell | 1.14 | 0.9 | 6214 | 83 | 5 |
| electrons | 0.78 | 0.6 | 5072 | 69 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| hydrogen outer shell electrons | 0.22 | 0.4 | 9413 | 53 |
| how many electrons in hydrogen outer shell | 1.58 | 0.2 | 9565 | 26 |
| hydrogen number of electrons in outer shell | 1.1 | 0.2 | 1836 | 10 |
| hydrogen number of electrons fill outer shell | 0.11 | 0.8 | 5677 | 68 |
| how many electrons fill hydrogen outer shell | 0.86 | 0.3 | 7853 | 40 |
| hydrogen valence electrons outer shell | 0.37 | 1 | 9354 | 8 |
| hydrogen electrons to fill outer shell | 1.07 | 0.8 | 782 | 100 |
| hydrogen electrons in outer shell | 0.27 | 0.1 | 9142 | 46 |
| how many outer electrons does hydrogen have | 1.17 | 0.2 | 6541 | 95 |
| how many electrons shells does hydrogen have | 0.04 | 0.1 | 724 | 7 |
| how many electrons in outer shell | 1.13 | 0.9 | 9932 | 45 |
| number of electron shells in hydrogen | 0.64 | 0.4 | 8047 | 20 |
| how many electrons in hydrogen valence shell | 0.43 | 0.5 | 6591 | 9 |
| how many electrons in hydrogen | 0.63 | 0.6 | 6476 | 12 |
| number of electrons in outer shell | 0.76 | 0.5 | 6165 | 21 |
