Gram-atomic mass of an element may be defnined as the mass of Avogadro’s number of atoms.

Answer

To determine whether the statement "Gram-atomic mass of an element may be defined as the mass of Avogadro’s number of atoms" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Gram-Atomic Mass**:
- The gram-atomic mass of an element is defined as the mass of one mole of atoms of that element. This is typically expressed in grams.

2. **Know Avogadro's Number**:
- Avogadro's number (denoted as \(N_A\)) is a constant that represents the number of atoms, molecules, or particles in one mole of a substance. Its value is approximately \(6.022 \times 10^{23}\).

3. **Relate Gram-Atomic Mass to Avogadro's Number**:
- By definition, one mole of any substance contains \(N_A\) particles (atoms, in this case). Therefore, the gram-atomic mass of an element corresponds to the mass of \(6.022 \times 10^{23}\) atoms of that element.

4. **Example with Sodium**:
- For instance, the atomic mass of sodium (Na) is approximately 23 g/mol. This means that 23 grams of sodium contains \(6.022 \times 10^{23}\) atoms of sodium. Thus, the mass of Avogadro's number of sodium atoms is indeed 23 grams.

5. **Conclusion**:
- Since the gram-atomic mass is defined as the mass of Avogadro’s number of atoms, the statement is true.

### Final Answer:
The statement "Gram-atomic mass of an element may be defined as the mass of Avogadro’s number of atoms" is **True**.

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