2006-08-28 09:29:52 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
You are probably thinking of the inert gasses which are located in Group 18 (the last column on the right) on the periodic table. Examples are xenon, argon, neon, krypton, and radon.
2006-08-28 09:31:24 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Any pure element with a vapor pressure greater than ATM at STP will be a "gaseous" element.
Would you include O2 which is technically a gaseous molecule? if so, add Cl2 F2, N2
Otherwise, Noble Gases (He, Ne, Ar, Kr, Xe, Rn) are the only non-molecular gasses at STP that I know of.
2006-08-28 17:10:13 · answer #2 · answered by bubsir 4 · 0⤊ 0⤋
Gaseous elements are defined as being a gas at normal atmospheric temperature and pressure in their pure elemental state.
In order of atomic # they are Hydrogen, Helium, Nitrogen, Oxygen, Fluorine, Neon, Chlorine, Argon, Krypton, Xenon, Radon
2006-08-28 16:53:11 · answer #3 · answered by sprcpt 6 · 0⤊ 0⤋
the nobel gases are group 18. others are gases as well. better periodic tables delineate this
2006-09-01 14:15:10 · answer #4 · answered by shiara_blade 6 · 0⤊ 0⤋
it is like,1A group(H),Nobel gases,7A group(F),6A(O2),5A(N2),
2006-08-28 18:10:08 · answer #5 · answered by fatma m 2 · 0⤊ 0⤋