Although `D_(2)O` resembles `H_(2)O` chemically, yet it is a toxic substance. Explain

Explanation

### Step-by-Step Solution:

1. **Understanding D₂O (Heavy Water)**:
- D₂O, or heavy water, is chemically similar to H₂O (normal water) but contains deuterium (D) instead of regular hydrogen (H). Deuterium is an isotope of hydrogen, meaning it has the same atomic number (1) but a different mass number (2).

2. **Chemical Properties**:
- Both D₂O and H₂O are odorless and tasteless. This similarity in physical properties can lead to the misconception that heavy water is safe to consume.

...