Phosphorescence shown by P is due to

Options

A. oxidation of Pinto `P_2O_3`
B. oxidation of Pinto `P_2O_5`
C. oxidation of luciferin by luciferase enzyme.
D. reduction of Pinto phosphide ions.

Answer

To solve the question regarding the phosphorescence shown by phosphorus, we need to analyze the options provided and understand the concept of phosphorescence.

### Step-by-Step Solution:

1. **Understand Phosphorescence**:
- Phosphorescence is the phenomenon where a substance absorbs energy and then re-emits it as light over a longer period. This process is different from fluorescence, where the light emission occurs almost instantaneously.

2. **Analyze the Options**:
- **Option 1**: Oxidation of Phosphorus into P2O3.
- **Option 2**: Oxidation of Phosphorus into P2O5.
- **Option 3**: Oxidation of Luciferin by Luciferase enzyme.
- **Option 4**: Reduction of Phosphorus into Phosphide ion.

3. **Evaluate Option 1**:
- The oxidation of phosphorus to P2O3 involves the reaction of phosphorus with oxygen. This reaction can lead to the formation of phosphorescent materials. Phosphorus (P) reacts with oxygen (O2) to form phosphorus trioxide (P2O3), which is known to exhibit phosphorescence.

4. **Evaluate Option 2**:
- The oxidation of phosphorus to P2O5 also occurs, but it is not primarily responsible for phosphorescence. P2O5 is more stable and does not exhibit the same luminescent properties as P2O3.

5. **Evaluate Option 3**:
- The oxidation of Luciferin by Luciferase enzyme is unrelated to phosphorus and does not pertain to the phosphorescence of phosphorus itself.

6. **Evaluate Option 4**:
- The reduction of phosphorus to form phosphide ions does not lead to phosphorescence. Instead, it involves the formation of a negatively charged ion and does not contribute to light emission.

7. **Conclusion**:
- Based on the analysis, the correct answer is **Option 1: The oxidation of Phosphorus into P2O3** is responsible for the phosphorescence shown by phosphorus.

### Final Answer:
Phosphorescence shown by phosphorus is due to the oxidation of phosphorus into P2O3.

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