A) \[C{{H}_{4}}\]
B) \[CO\]
C) \[C{{l}_{2}}\]
D) \[C{{O}_{2}}\]
Correct Answer: A
Solution :
: Root mean square velocity, \[\]\[u=\sqrt{\frac{3RT}{M}}\] From the above equation/lower the molecular mass, higher the RMS-velocity.
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