Which has highest number of atoms ? - Vidyadip

MCQ

Which has highest number of atoms ?

A
$11.2\, L$ of $CO_2$ gas at $STP$
B
$2\,g$ of $H_2$
C
$2\,g-$ atom of $C$
✓
$3\,g-$ molecule of $SO_2$

✓

Answer

Correct option: D.

$3\,g-$ molecule of $SO_2$

d
$\mathrm{CO}_{2} \Rightarrow \frac{11.2}{22.4} \times \mathrm{N}_{\mathrm{A}} \times 3=1.5 \mathrm{N}_{\mathrm{A}}$ atoms

$\mathrm{H}_{2} \Rightarrow \frac{2 \mathrm{g}}{2} \times \mathrm{N}_{\mathrm{A}} \times 2=2 \mathrm{N}_{\mathrm{A}}$ atoms

$\mathrm{C} \Rightarrow 2 \times \mathrm{N}_{\mathrm{A}}$ atoms

$\mathrm{SO}_{2} \Rightarrow 3 \times \mathrm{N}_{\mathrm{A}} \times 3=9 \mathrm{N}_{\mathrm{A}}$ atoms

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