Arrange the following metals in the decreasing order of their chemical reactivity placing the most active first. The metals are Cu, Mg, Fe, Na, Ca, Zn.
A
Na > Ca > Mg > Zn > Fe > Cu (least active)
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B
Na > Ca > Mg > Zn > Cu > Fe (least active)
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C
Na > Mg > Ca > Zn > Fe > Cu (least active)
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D
Na > Mg > Zn > Ca > Fe > Cu (least active)
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Solution
The correct option is A Na > Ca > Mg > Zn > Fe > Cu (least active) The decreasing order of chemical reactivity is given below.
(most active) Na > Ca > Mg > Zn > Fe > Cu (least active)