What is the second lightest gas?
Answers:
Helium.
hydrogen
helium
The one just a bit heavier than the lightest gas
helium
Isn't it helium ?
.^)
It is helium. Atomic number 2.
helium
cotton candy farts.
helium
helium
Helium
Actually your all wrong, In order Hydrogen, Deuterium Helium.
So Deuterium is second.
Helium, only hydrogen has more neutrons and protons than helium.
The answer is helium (He):
Hydrogen is the lightest with a density of 0.0899 kg/m^3
Helium is second with a density of 0.1664 kg/m^3
For comparison, air has a density of 1.293 kg/m^3
These values are at standard temperature and pressure (273 K and 101 kPa).
P.S. Deuterium is still hydrogen just with an additional neutron and besides it is still more dense than helium with a density of 0.180 kg/m^3
helium, good luck with your exam/homework lol
helium..but neon has been argued by my dumb friend.
helium- if you really mean 2nd least dense gas.
Heavy/light would depend on quantity of gas that you had or were comparing
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