To determine the number of Oxygen atoms in the chemical formula \(2 \text{MgO}\), we can follow these steps:
1. Identify the subscript of the element inside the molecule:
The molecule \(\text{MgO}\) contains one atom of Magnesium (Mg) and one atom of Oxygen (O).
2. Observe the coefficient outside the molecule:
The coefficient \(2\) in front of the molecule \(\text{MgO}\) indicates that there are 2 molecules of \(\text{MgO}\).
3. Calculate the number of Oxygen atoms:
- Each \(\text{MgO}\) molecule has 1 Oxygen atom.
- With 2 molecules of \(\text{MgO}\), the total number of Oxygen atoms is \(2 \times 1 = 2\).
Therefore, the total number of Oxygen atoms in the chemical formula [tex]\(2 \text{MgO}\)[/tex] is [tex]\(\boxed{2}\)[/tex].
