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......
The elements that are gases at room temperature include hydrogen. They also include all the inert or noble gases, which are those elements in Group 18: helium, neon, argon, krypton, xenon and radon. We also know that the halogens fluorine, chlorine and bromine are gases at room temperature (20°C). That leaves nitrogen and oxygen as the last of the elements that are gases at room temperature. All of these elements are nonmetals or halogens or inert gases. LAUGH OUT LOUD. Hydrogen, which appears at the top of Group 1, is not considered a metal, though all the elements below it are the Alkali Metals of Group 1.
A link is provided below to the Wikipedia post on the Periodic Table of elements (standard). Each element on the table is a link to the post on that element.
EDIT: bromine is not a gas at room temperature it is a liquid. That makes 11 non-metals that are in the gaseous state at room temperature
If any element has a symbol of (g) on the right oh its symbol, then it shows that the element is in gaseous state.
Oxygen, Hydrogen, Nitrogen, Fluorine, Chlorine and all of the inert gases are gases at room temperature and pressure. There are many. Hydrogen, oxygen, nitrogen, neon, argon, helium, radon, krypton, chlorine, bromine. And some more.
The heaviest element that is a gas at ordinary Earth temperatures is radon. Ununoctium is heavier and may be a gas, but is expected to be solid and only about 4 atoms of it have ever been synthesized anyway... it's kind of meaningless to talk about whether something is a solid, liquid, or gas when you're talking about isolated atoms of the stuff.
Helium is an element which is in the form of gas at room temperature. Why not other inert gasses too are good examples. Neon, Argon, xenon
hydrogen
helium
Nitrogen
oxygen
Fluorine
Neon
chlorine
Argon
There are several elements which are gas at the room temperature , some of them are 1) Oxygen (2)nitrogen (3) and many more
Osmium.
Iridium is a close second.
Gold is right up there.
Lead is not even close.
Sodium
krypton
At room temperature and standard pressure the element Chlorine is a gas.
The element hydrogen is in the gas phase at standard temperature and pressure.
Oxygen is an element. At room temperature, molecular oxygen (O2) is a gas.
Liquid: mercury. Gas: neon.
It is a gas.
Sodium
In group 16 on the periodical table the only element that is a gas at room temperature is oxygen (O).
gas
krypton
Argon is an element that is a gas at room temperature. It can be found in incandescent light bulbs because it is inert.
At room temperature, nickel, (Ni) is a solid.
No- hydrogen is a gas at room temperature.
No. Polonium is a solid at room temperature.
aldehyde is a gas/liquid because if you spin this element in a test tube it becomes room temperature
At room temperature and standard pressure the element Chlorine is a gas.