What Is The Least Abundant Permanent Gas?
What Is The Least Abundant Permanent Gas? Nitrogen — 78 percent. Oxygen — 21 percent. Argon — 0.93 percent. Carbon dioxide — 0.04 percent. Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor. Which gas is the least abundant gas in the air? The most abundant naturally occurring gas is