4.Find the correct order of reactivity of metals?
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Na>Au>Fe>Mg
Al>Sn>Pb>Ag
Mg>Fe>Na>Au
Hg>Pb>Zn>Au
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Answer:
(b) is the correct one
Explanation:
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Explanation:
Au,Fe,Mg,Na
Ag,Pb,Sn,Al
Au,Fe,Mg,Na
Au,pb,zn,Hg
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