Which statement about noble gases is true?

• A. They do not react with other elements
• B. They are highly reactive
• C. They form many ions in solution
• D. They always form acids

Answer: (A)

Noble gases are chemically very stable because their outer electron shells are full. That filled valence shell means there’s little tendency to gain or lose electrons to form bonds, so they don’t readily react with other elements under normal conditions. Since reactions are all about reconfiguring electrons, this inert nature explains why they rarely form ions in solution and do not typically form acids. There are rare, extreme cases where one or two noble gases can participate in compounds (like xenon fluorides), but those are exceptional and require special conditions. So the statement that noble gases do not react with other elements best captures their general behavior.