Which of these elemtns is used as an antiseptic in medicine ?

Options

A. Carbon
B. Oxygen
C. Nitrogen
D. Iodine

Explanation

To determine which element is used as an antiseptic in medicine, let's analyze the options provided:

1. **Identify the Elements**:
- A: Carbon
- B: Oxygen
- C: Nitrogen
- D: Iodine

2. **Understand the Role of Antiseptics**:
- Antiseptics are substances that prevent the growth of disease-causing microorganisms. They are commonly used in medical settings to clean wounds and prevent infections.

3. **Evaluate Each Element**:
- **Carbon (A)**: While carbon is essential for life and is a component of many organic compounds, it is not used as an antiseptic.
- **Oxygen (B)**: Oxygen is vital for respiration and is not used as an antiseptic.
- **Nitrogen (C)**: Nitrogen is a major component of the atmosphere and is not used as an antiseptic.
- **Iodine (D)**: Iodine is well-known for its antiseptic properties. It is commonly used in the form of tincture of iodine or povidone-iodine to disinfect wounds and prevent infections.

4. **Conclusion**:
- Based on the analysis, the correct answer is **D: Iodine**. It is widely used in medicine as an antiseptic due to its ability to kill germs and pathogens.