Mass of one atom of oxygen is

Options

A. `(16)/(6.023 xx 10^(23))`g
B. `(32)/(6.023 xx10^(23))g`
C. `1/(6.023 xx 10^(23))`g
D. 8 u

Explanation

To find the mass of one atom of oxygen, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Atomic Mass of Oxygen**:
The atomic mass of oxygen (O) is approximately 16 grams per mole.

2. **Understand Avogadro's Number**:
Avogadro's number (N_A) is \(6.022 \times 10^{23}\) atoms/mole. This number represents the number of atoms in one mole of any substance.

3. **Calculate the Mass of One Atom**:
To find the mass of one atom of oxygen, we divide the atomic mass by Avogadro's number:
\[ \text{Mass of one atom of oxygen} = \frac{\text{Atomic mass of oxygen}}{\text{Avogadro's number}} = \frac{16 \text{ grams}}{6.022 \times 10^{23} \text{ atoms}} \]

4. **Perform the Calculation**:
\[ \text{Mass of one atom of oxygen} \approx \frac{16}{6.022 \times 10^{23}} \approx 2.66 \times 10^{-24} \text{ grams} \]

5. **Conclusion**:
The mass of one atom of oxygen is approximately \(2.66 \times 10^{-24}\) grams.