Tritium is the heaviest particle-bound isotope of hydrogen. It is one of the few nuclides with a distinct name. The use of the name hydrogen-3, though more systematic, is much less common. Naturally occurring tritium is extremely rare on Earth. The atmosphere has only trace amounts, formed by the interaction of its gases with cosmic rays.

氕（1H）通常称为 氢，它是氢的主要 稳定同位素，其天然 丰度 为99.985%，按原子百分数计，它是宇宙中最多的元素，在地球上的含量仅次于氧，它主要分布于 水 及各种 碳氢化合物 中，在 …

2025年2月25日 · tritium, (T, or 3 H), the isotope of hydrogen with atomic weight of approximately 3. Its nucleus, consisting of one proton and two neutrons, has triple the mass of the nucleus of ordinary hydrogen. Tritium is a radioactive species having a half-life of 12.32 years; it occurs in natural water with an abundance of 10 -18 of that of natural hydrogen.

Hydrogen-3 - also known as tritium - is a radioactive isotope of hydrogen that occurs naturally in very small amounts in the atmosphere. It has a half-life of about 12.3 years and beta decays into helium-3. Tritium is used in the nuclear industry as a fuel in nuclear reactors and in the manufacture of nuclear weapons.

In general terms, tritium is the radioactive form of hydrogen (3 H). This rare radioactive substance is relatively safe for commercial, military, and scientific applications. Let’s examine closer tritium 3H: what it is and what it’s used for. Curious about the …

3 H is known as tritium and contains one proton and two neutrons in its nucleus. It is radioactive, decaying into helium-3 through beta decay with a half-life of 12.32 years. It is sufficiently radioactive that it can be used in luminous paint, making it useful in such things as watches where the glass moderates the amount of radiation getting out.

Tritium (3H) is the only radioactive isotope of hydrogen, and has a half-life of 12.43 years (Unterweger et al., 1980). Large quantities of tritium were introduced into the hydrological cycle by atmospheric thermonuclear testing in the 1950s and 1960s, providing a...

2024年6月18日 · Tritium is the radioactive isotope of the element hydrogen. It is also known as hydrogen-3 or using the shorthand notation T or 3 H in chemical formulas and reactions. The …

The name of this isotope is formed from the Greek word τρίτος (trítos), meaning “third”. Tritium is a radioactive isotope, but it emits a very weak form of radiation, a low-energy beta particle similar to an electron. It is a pure beta emitter (i.e., beta emitter without accompanying gamma radiation).

Tritium (3H) is widely used in life sciences research. A wide range of tritium-labeled compounds are available, at moderate specific activity, and forms with uniform labeling or selective parts of the molecule labeled are often available. The moderate half-life permits the use of chemically stable isotope batches over a period of years.