Which of the following gases is not considered an inert gas?

Which of the following gases is not considered an inert gas?

• A. Nitrogen
• B. Helium
• C. Argon
• D. Carbon Dioxide

Answer: (D)

Carbon Dioxide is not considered an inert gas because it actively participates in chemical reactions, particularly in processes like combustion and respiration. Inert gases, such as Helium and Argon, have complete valence electron shells, which make them largely unreactive with other elements under standard conditions. Nitrogen can be categorized as an inert gas in some industrial contexts, as it does not readily react with many materials; however, it can still participate in specific reactions, unlike the other pure inert gases. In contrast, Carbon Dioxide has significant reactivity, especially in the presence of moisture and other common substances, making it unsuitable to be classified as an inert gas.

Carbon Dioxide is not considered an inert gas because it actively participates in chemical reactions, particularly in processes like combustion and respiration. Inert gases, such as Helium and Argon, have complete valence electron shells, which make them largely unreactive with other elements under standard conditions. Nitrogen can be categorized as an inert gas in some industrial contexts, as it does not readily react with many materials; however, it can still participate in specific reactions, unlike the other pure inert gases. In contrast, Carbon Dioxide has significant reactivity, especially in the presence of moisture and other common substances, making it unsuitable to be classified as an inert gas.