Two bulbs $B_1$ and $B_2$ contain $10 \ g$ each of $O_2$ and $O_3$ respectively. Which bulb contains a greater number of molecules and atoms?

  • A
    Bulb $B_1$
  • B
    Bulb $B_2$
  • C
    $B_1$ has more molecules but equal number of atoms.
  • D
    $B_2$ has more molecules but equal number of atoms.

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Assertion $(A)$: Equal moles of different substances contain the same number of constituent particles.
Reason $(R)$: Equal weights of different substances contain the same number of constituent particles.
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