Flask with greater mean free path for the molecules () — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

Mean free path $\lambda \propto 1 / (N \sigma^2) \propto M / \sigma^2$. A ($2/1=2$), B ($16/4=4$), C ($32/4=8$). Flask C is highest. Therefore, correct answer is C.