Properties of Phosphorus:

• Atomic number: 15
• Symbol: P
• State at room temperature: Solid
• Color: It can appear in several colors, including white, red, and black, depending on its allotropes
• Boiling point: 280.5 °C
• Melting point: 44.15 °C

Uses of Phosphorus:

Phosphorus is used in various ways, including:

• As a component of fertilizers to promote healthy plant growth
• In the production of matches, flame retardants, and fireworks
• In the manufacturing of detergents and soaps
• As a key ingredient in the production of steel and other metal alloys

Allotropes of Phosphorus:

Phosphorus exists in several allotropes, including white, red, and black phosphorus. Each allotrope has different physical and chemical properties.

Environmental Impact:

Excessive use of phosphorus in fertilizers can lead to water pollution through runoff, causing algal blooms and disrupting aquatic ecosystems. It is important to use phosphorus-based products responsibly to minimize environmental impact.

Study Guide for Phosphorus:

Here are some key points to remember about phosphorus:

1. What is the atomic number of phosphorus?
2. What are the common uses of phosphorus?
3. Name the different allotropes of phosphorus.
4. What environmental impact can excessive phosphorus use have?