**Assertion (A):** The number of atoms in of is the same as in of . <br>**Reason (R):** Gram atomic — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$\text{moles of atoms} = \text{mass} / \text{atomic mass}$. Moles of $He = 1/4$ and moles of $Li \approx 1/7$. Since the atomic masses are different, the number of atoms in the same mass must be different. Assertion is false; Reason is true. [1, 5]