Question

Arrange the following metals in the decreasing order of their reactivity with metal salts.

• A. Copper
• B. Calcium
• C. Potassium
• D. Iron
• E. Zinc

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. A more reactive element will displace a less reactive metals from its salt solution. The displacement reaction is based on the principle of reactivity series.