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| Hydrogen-4 | |
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| General | |
| Name, symbol | Hydrogen-4,4H |
| Neutrons | 3 |
| Protons | 1 |
| Nuclide data | |
| Half-life | 9.93696x10-23 seconds |
| Isotope mass | 4.0279121 u |
| Spin | 2 |
Hydrogen-4 is a highly unstable isotope of hydrogen. The nucleus consists of a proton and three neutrons. It has been synthesised in the laboratory by bombarding tritium with fast-moving deuterium nuclei (see this article). In this experiment, the tritium nuclei captured neutrons from the fast-moving deuterium nucleus. The presence of the hydrogen-4 was deduced by detecting the emitted protons. Its atomic mass is 4.0279121. It decays through neutron emission and has a half-life of 9.93696x10-23 seconds.
Quadium
In the 1955 satirical novel The Mouse That Roared, the name quadium was given to the hydrogen-4 isotope that powered the Q-bomb that the Duchy of Grand Fenwick captured from the United States.
See also
| Lighter: Hydrogen-3 |
Hydrogen-4 is an isotope of Hydrogen |
Heavier: Hydrogen-5 |
| Decay product of: None |
Decay chain of Hydrogen-4 |
Decays to: Hydrogen-3 |
