. The correct decreasing order of the metals in the activity series is:
(A) Ca, Mg, Ni, Fe
(B) Ni, Ca, Mg, Fe
(C) Ca, Mg, Fe, Ni
(D) Mg, Ca, Fe, Ni
Best Answer
(C)
Reactivity in decreasing order
Ca > Mg > Al > Zn > Fe > Ni
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