Tritium decays into helium-3 through the process of beta decay. During beta decay, a neutron in the tritium nucleus is transformed into a proton, releasing an electron and an electron antineutrino. This results in the formation of a helium-3 nucleus, which is stable and does not undergo further radioactive decay. **

Deuterium and tritium are produced through nuclear reactions. Deuterium is naturally found in water, and can also be extracted from water through a process called electrolysis. Tritium, on the other hand, is not naturally abundant and is typically produced in nuclear reactors by bombarding lithium-6 with neutrons. This reaction causes the lithium-6 to absorb a neutron and produce tritium and helium-4. Both deuterium and tritium are used as fuel in nuclear fusion reactions, which have the potential to generate large amounts of energy. **

Tritium is a radioactive isotope commonly used in watch dials to make them glow in the dark. In a 1987 Rolex watch, the tritium used would have decayed significantly over time, reducing its radioactivity to very low levels. Therefore, the tritium in a 1987 Rolex watch is not considered dangerous to wear or handle. However, it is always recommended to handle vintage watches with care and avoid ingesting or inhaling any components. **

The clock hands do not have tritium or radium. Instead, they are likely made with a non-radioactive material such as phosphorescent paint or other non-radioactive luminescent materials. This is because tritium and radium are radioactive materials that are not typically used in consumer products due to their potential health risks. **

Deuterium and tritium are used in nuclear fusion because they are isotopes of hydrogen that have the necessary properties for efficient fusion reactions. Deuterium is readily available in natural water and is relatively easy to extract, making it a practical fuel source for fusion reactions. Tritium, while not naturally abundant, can be produced from lithium within the fusion reactor itself, making it a self-sustaining fuel source. Additionally, the fusion of deuterium and tritium produces a high-energy reaction with a relatively low ignition temperature, making it more feasible for current fusion technology. **

The possession of tritium at home is highly regulated due to its radioactive properties. In most countries, individuals are not allowed to possess tritium at home without a specific license or permit. The amount of tritium that one is allowed to possess at home is typically very limited and is subject to strict regulations and oversight by the appropriate government agencies. It is important to adhere to these regulations to ensure the safe handling and storage of tritium. **

A water molecule with deuterium and tritium would be called heavy water. Heavy water is a form of water where the hydrogen atoms are replaced with deuterium, a stable isotope of hydrogen, and sometimes tritium, a radioactive isotope of hydrogen. Heavy water has slightly different physical and chemical properties compared to regular water, and it is commonly used in nuclear reactors and scientific research. **

A water molecule with deuterium and tritium would be named as heavy water. Heavy water is a form of water where the hydrogen atoms are replaced with deuterium and tritium isotopes. It is also known as deuterium oxide or D2O. The presence of deuterium and tritium in the water molecule gives it different properties compared to regular water. **