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Which element is the heaviest gas at room temperature?
Osmium This is totally incorrect. Osmium has the tenth highest melting point of all elements and therefore cannot be a gas at room temperature. Radon is heavier and also a gas. The atomic weight of radon is 222 atomic mass units making it the heaviest gas known. It is also radioactive and can collect in basements/cellars of homes. From Wikipaedia :: According to the United States Environmental Protection Agency, radon is the second most frequent cause of lung cancer, after cigarette smoking, causing 21,000 lung cancer deaths per year in the United States......
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solid. Please see the link.
Liquid: mercury. Gas: neon.
There are only two elements that are liquid at room temperature and they are Mercury (Hg) and Bromine (Br). Mercury is used in thermometers and Bromine is used in industrial a…pplications. Bromine is a halogen while Mercury is a Transition Metal. Copernicium (Cn) might be liquid at room temperature but chemists are not sure about it.
Chlorine is a yellow green gas at room tempurature.
Mercury (Hg) and Bromine (Br). Copernicium (Cn) might be liquid at room temperature but chemists are not sure about it.
There are 11 elements that are gasses at RT (taking RT as 25 degrees celcius) and 1 atm pressure. These are Hydrogen Nitrogen Oxygen Fluorine Chlorine Helium Neon Argon Krypto…n Xenon and Radon.
The elements mercury (Hg) and bromine (Br) are liquid at room temperature. But elements like caesium (Cs) gallium (Ga) and francium (Fr) are in liquid state only slightly ab…ove room temperature. (Being unstable, bulk francium would vaporize from its own heat of decay.) Melting points: Mercury (234.32K about -39°C) Bromine (266.06K about -7°C) Francium (300K about 27°C or 81°F) Cesium (301.59K about 28°C or 82°F) Gallium (303.3K about 30°C or 86°F)
All group 18 elements (the noble gases) exist as monatormic gases at room temperature and standard pressure. All other elements form diatomic gases, if they exist as gas under… the specified conditions. Among the listed elements there is only one noble gas: Argon
The elements hydrogen, helium, nitrogen, oxygen fluorine, neon, chlorine, argon, xenon, krypton, and radon are gasses at room temperature.
Besides Noble gases (He,Ne,Ar,Kr,Xe,Rn) other gaseous elements include H 2 ,N 2 ,O 2 , F 2 and Cl 2 . Br 2 is a volatile liquid.
The scientific definition of room temperature , also known as standard temperature and pressure (STP), is 68Â°F (20Â°C) at one atmosphere (sea level). By this defini…tion, bromine and mercury are the only two elements that are liquid at room temperature. Three other elements -- cesium , gallium and rubidium -- become liquid near this mark. Cesium, for example, becomes liquid at 82Â° (28Â°C). It's also believed that francium would be liquid at or just above room temperature, but this highly-unstable radioactive element has yet to be manufactured in a quantity which would confirm this.
All of the elemental noble gases (helium, neon, argon, krypton, xenon and radon) are gases at room temperature.