MCQ
Collision diameter is least in case of:
  • A
    $H_2$
  • B
    $He$
  • $CO_2$​
  • D
    $N_2$​

Answer

Correct option: C.
$CO_2$​
Collision diameter will be least for the low molecular weight.
$\text{d}\alpha\frac{1}{\text{M}}$
In this case, $Co_2$​ has the highest molecular weight.

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