Is it true that under certain conditions, `Mg` can reduce `SiO_(2)`, and `Si` can reduce `MgO` ?

Explanation

To determine whether magnesium (Mg) can reduce silicon dioxide (SiO₂) and whether silicon (Si) can reduce magnesium oxide (MgO) under certain conditions, we can analyze the thermodynamics of the reactions involved.

### Step-by-Step Solution:

1. **Understanding the Reactions**:
- The formation of magnesium oxide (MgO) from magnesium (Mg) and oxygen (O₂) can be represented as:
\[
2 \text{Mg} + \text{O}_2 \rightarrow 2 \text{MgO}
...