Sir William Ramsey is one scientist credited with identifying the noble gas argon. Sir Ramsey separated nitrogen gas from the air and reacted it with an excess of magnesium, producing solid magnesium nitride. However, a small sample of an unreactive gas remained with a density different from the density of the nitrogen
gas. Sir Ramsey identified the unreactive gas as argon and later went on to discover neon, krypton, and xenon.
Compare the chemical reactivities of nitrogen gas and argon gas based on Sir Ramsey's experiment using magnesium