Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
mass of electron compared to proton | 1.65 | 0.7 | 4554 | 84 |
electron mass compared to 1 proton | 0.17 | 0.9 | 787 | 75 |
mass of electron compared to mass of proton | 1.1 | 0.4 | 8772 | 81 |
electron mass and proton mass | 0.96 | 0.6 | 403 | 29 |
proton and electron mass | 1.27 | 0.7 | 7333 | 30 |