Potassium

Potassium is a chemical element with the symbol K and atomic number 19. It is a soft, silvery-white metal that reacts violently with water and air. Potassium is essential for various bodily functions and is found in many foods.

Properties of Potassium

• Symbol: K
• Atomic number: 19
• Group: Alkali metal
• State at room temperature: Solid
• Melting point: 63.35°C
• Boiling point: 759°C

Uses of Potassium

Potassium has several important uses:

• It is a vital nutrient for plants and is often used in fertilizers to promote healthy growth.
• Potassium compounds are used in various industrial processes, such as in the production of soaps, glass, and explosives.
• In the human body, potassium plays a crucial role in maintaining fluid and electrolyte balance, nerve function, and muscle contractions.

Study Guide

Here are some key points to remember about potassium:

1. Potassium is an essential nutrient for plant and human health.
2. It is a reactive metal that must be stored in oil to prevent it from reacting with air or water.
3. Good dietary sources of potassium include bananas, oranges, potatoes, and spinach.
4. Deficiency of potassium can lead to muscle weakness, cramps, and irregular heartbeats.
5. Excessive intake of potassium supplements or medications can be harmful, especially for individuals with kidney problems.