| the nucleus | 0.73 |
| the center of the atom | 0.37 |
| decay into proton | 0.78 |
| turn into proton | 0.67 |
| decay into electron | 0.57 |
| emit electron | 0.53 |
| consist of three quarks | 0.53 |
| form the atom | 0.48 |
| split into proton | 0.46 |
| release more neutrons | 0.44 |
| split other atoms | 0.44 |
| interact with nucleus | 0.43 |
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| fission | 0.59 |
| the lithium | 0.28 |
| activation of the weapo… | 0.25 |
| electric charge | 0.63 |
| energy | 0.58 |
| zero charge | 0.44 |
| neutral charge | 0.44 |
| mass | 0.43 |
| spin | 0.43 |
| net electric charge | 0.42 |
| magnetic moment | 0.37 |
| similar masses | 0.35 |
| a mass of 1 amu | 0.35 |
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| quark | 0.54 |
| smaller particles | 0.37 |
| composed of one up quark | 0.74 |
| produced by fission | 0.72 |
| released | 0.69 |
| produced | 0.69 |
| emitted per fission | 0.63 |
| emitted | 0.63 |
| composed of two down qu… | 0.60 |
| scattered | 0.59 |
| uncharged | 0.53 |
| discovered in 1932 | 0.51 |
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