Question

Which metal reacts readily with cold water?

a)Gold b)Silver c)Magnesium d) Calcium​

Answer 1

Calcium reacts readily with cold water.

• Generally, elements with high metallic character react with cold water. As the metallic character decreases the tendency to react with cold water also decreases.
• Of the given metals, The metallic character for calcium is the highest, followed by Magnesium, Gold, and Silver.
• Calcium reacts directly with the cold water. Elements like Sodium and Potassium rigorously react with cold water.
• Elements like Calcium react with cold water but at a slower rate than Sodium and Potassium.
• Magnesium reacts with cold water at a very slow rate.
• Elements of the d-block do not react with cold water. (Gold, Silver).

Hence, Gold and Silver do not react with cold water. Magnesium reacts with cold water at a very slow rate and Calcium reacts readily with cold water.

Hence, Option D Calcium is the correct answer.

Answer 2

Answer:

Explanation: magnesium