Which element can oxidise water to `O_2`? Justify.

Explanation

To determine which element can oxidize water to produce oxygen gas (O₂), we can analyze the properties of certain elements, particularly their electronegativity and their ability to act as oxidizing agents.

### Step-by-Step Solution:

1. **Identify the Element**: The element that can oxidize water to O₂ is **Fluorine (F)**.

2. **Reasoning**: Fluorine is the most electronegative element in the periodic table. Its high electronegativity means that it has a strong tendency to attract electrons.

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