What is the most common oxidation number of argon?

Answer 1

Argon is generally considered to be unreactive element, i.e. it cannot form compounds. But new researchs have found that argon can form a compound called Argon fluorohydride(HArF) which is very unstable. Here Argon's charge may be neutral, i.e. 0

Answer 2

Argon does not form ions. So it has only 0 Oxidation number.

Answer 3

Argon is a noble gas. It is inert, so it usually has no charge.

Answer 4

Argon doesn't form compounds and so its oxidation number is zero