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Question

Arrange the following metals in the order of their decreasing reactivity?


Fe,Cu,Mg,Ca,Zn,Ag

A
Ca>Zn>Mg>Cu>Ag>Fe
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B
Ca>Zn>Cu>Mg>Ag>Fe
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C
Ca>Mg>Zn>Fe>Cu>Ag
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D
Ca>Mg>Cu>Zn>Fe>Ag
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Solution

The correct option is C Ca>Mg>Zn>Fe>Cu>Ag
Alkali metals are very reactive followed by alkaline earth metals, on moving left to right in a period reactivity decreases, and from top to bottom in a group reactivity increases.

So, Calcium is more reactive among all given elements followed by Magnesium, because calcium is at down in a group and magnesium is above in the group.

Among transition metals, Silver, gold are less-reactive or noble metals, Copper is less reactive due to stable electronic configuration.

Order of reactivity is Ca>Mg>Zn>Fe>Cu>Ag

Option C is correct.

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