Chemistry – The Periodic Table - Group I properties | e-Consult
The Periodic Table - Group I properties (1 questions)
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Based on the reactivity of sodium, we can predict the following properties for potassium, calcium, and magnesium:
- Potassium (K): Potassium is expected to be even more reactive than sodium. It will also react vigorously with water, producing hydrogen gas and potassium hydroxide. Potassium is a soft, silvery-white metal and is also highly reactive with air, tarnishing quickly. It is more reactive than calcium and magnesium.
- Calcium (Ca): Calcium is expected to be less reactive than sodium but more reactive than magnesium. It will react with water, although the reaction will be slower than that of sodium. Calcium is a strong, white metal. It reacts with acids and is used in various applications, including in the human body.
- Magnesium (Mg): Magnesium is expected to be less reactive than calcium. It will react with water, but the reaction will be relatively slow. Magnesium is a lightweight, silvery-white metal. It is often used in alloys and is also used in fireworks.
Key Prediction: As you move down Group I, reactivity with water increases. Appearance tends to remain silvery-white, but reactivity decreases.