**Match the quantities in Column I with the corresponding values in Column II:** <br><br>**Column I: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
**Match the quantities in Column I with the corresponding values in Column II:** <br><br>**Column I:** <br>(A) $0.5$ mole of $SO_2$ gas <br>(B) $1$ g-molecule of $H_2$ gas <br>(C) $0.5$ mole of $O_3$ gas <br>(D) $1$ g-atom of Nitrogen <br><br>**Column II:** <br>(P) $1.5 N_A$ atoms <br>(Q) $N_A$ atoms <br>(R) $0.5 N_A$ molecules <br>(S) $N_A$ molecules
💡 Solution & Explanation
**(A)** $0.5$ mol $SO_2$ has $0.5 N_A$ molecules (R) and $0.5 \times 3 = 1.5 N_A$ atoms (P). <br>**(B)** $1$ g-molecule is $1$ mole. $H_2$ has $1 N_A$ molecules (S) and $1 \times 2 = 2 N_A$ atoms (Q is $1 N_A$, so this matches $N_A$ molecules but atoms count is $2N_A$). *Note: If Q is $2 N_A$ it matches atoms, if Q is $N_A$ it matches molecules of others.* <br>**(C)** $0.5$ mol $O_3$ has $0.5 N_A$ molecules (R) and $0.5 \times 3 = 1.5 N_A$ atoms (P). <br>**(D)** $1$ g-atom is $1$ mole of atoms = $N_A$ atoms (Q).