Question

Statement I: Zinc can displace iron but not magnesium from their salt solutions.
Statement II: Magnesium can displace both iron and zinc from their salt solutions.

Based on the above statements, arrange the following elements in decreasing order of their reactivity.

• A. Iron (Fe)
• B. Magnesium (Mg)
• C. Zinc (Zn)
• D.

Answer 1

Statement I: Zinc can displace iron but not magnesium from their salt solutions.
⇒ (Zn > Fe) and (Zn < Mg)
Statement II: Magnesium can displace both iron and zinc from their salt solutions.
⇒ (Mg > Fe) and (Mg > Zn)
Thus,
Magnesium > Zinc > Iron