Question

Argon possesses

• A. translational motion only
• B. translational $+$ rotational motion
• C. translational $+$ vibrational motion
• D. translational $+$ rotational $+$ vibrational motion

Answer 1

Answer: (A)

Argon is a monatomic gas, thus its molecules can move in any direction in space. Hence, it can have three independent motions (all translational). Therefore, argon possesses only translational motion.