Question

The correct order of reactivity of metals is

• A. Na > Zn > Mg > Cu
• B. Na > Mg > Cu > Zn
• C. Mg < Na < Zn < Cu
• D. Na > Mg > Zn > Cu

Hint:

More reactive metals displace less reactive ones from their compounds.

Answer 1

The Correct Option is D

Step 1: Activity series.
Standard reactivity series: K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Ag > Au.
Step 2: Pick the relative order.
Among Na, Mg, Zn, Cu the decreasing reactivity is Na > Mg > Zn > Cu.