Which of the following has the maximum value of mean free path?

C O_{2}

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H_{2}

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O_{2}

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N_{2}

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Solution

The correct option is D $H_{2}$
The mean free path is the average distance traveled by a particle between two collisions.

$λ = \frac{1}{\sqrt{2} π σ^{2} N}$

where $σ$ is a collision, $N$ is the number of molecules per unit volume.

So, $λ$ will be the highest for a small value of $σ$

$H_{2}$ will have small $σ$ .

Hence, the correct option is (B).

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Similar questions

Out of $H_{2}, C O, N_{2}$ and $C O_{2},$ the gas which has least mean free path is:

In which of the following equilibria, the value of $K_{P}$ is less than $K_{C}$

(v_{r m s})

C O_{2}, H_{2}, N H_{3} ?

4 g

H_{2}

32 g

O_{2}

14 g

N_{2}

11 g

{C O}_{2}

500 m l

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