Radon - Wikipedia
Radon is a chemical element; it has symbol Rn and atomic number 86. It is a radioactive noble gas and is colorless and odorless. Of the three naturally occurring radon isotopes, only 222 Rn has a sufficiently long half-life (3.825 days) for it to be released from the soil and rock where it …
Radon | Rn (Element) - PubChem
Radon. Radon is a chemical element with symbol Rn and atomic number 86. Classified as a noble gas, Radon is a gas at room temperature.
Radon - Element information, properties and uses | Periodic Table
Element Radon (Rn), Group 18, Atomic Number 86, p-block, Mass [222]. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
Radon | Definition, Properties, Effects, & Facts | Britannica
2024年12月11日 · Radon, chemical element, a heavy radioactive gas of Group 18 (noble gases) of the periodic table, generated by the radioactive decay of radium. It is a colorless gas, 7.5 times heavier than air and more than 100 times heavier than hydrogen. Learn more about radon in …
Radon Definition, Facts, Symbol, Discovery, Properties, Uses
Radon (pronunciation: RAY-don) is an odorless, radioactive element that belongs to the family of noble gases and is represented by the chemical symbol Rn [1, 2]. It is colorless at room temperatures, but becomes phosphorescent when cooled below its freezing temperature and gradually turns into orange-red when the temperature is further lowered ...
What is Radon? | US EPA - U.S. Environmental Protection Agency
2024年11月20日 · Radon is a radioactive gas that forms naturally when uranium, thorium, or radium, which are radioactive metals break down in rocks, soil and groundwater. People can be exposed to radon primarily from breathing radon in air that comes through cracks and gaps in buildings and homes.
Radon (Rn) - Periodic Table
Radon is a chemical element of the periodic table with chemical symbol Rn and atomic number 86 with an atomic weight of 222 u and is classed as noble gas and is part of group 18 (noble gases). Radon is gas at room temperature.
RADON - Chemistry Explained
A radioactive element is one that gives off radiation and breaks down to form a different element. Radon is formed when heavier radioactive elements, like uranium and thorium, break down. In turn, radon breaks down to form lighter elements, such as lead and bismuth.
Radon (Rn) - Element Information, Facts, Properties, Uses
Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless Noble Gas, occurring naturally as a decay product of radium. Its most stable isotope, 222Rn, has a half-life of 3.8 days.
Chemical Symbol for Radon – Rn - Periodic Table of Elements
2020年11月21日 · The chemical symbol for Radon is Rn. Radon is a radioactive, colorless, odorless, tasteless noble gas. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead.