Which of the following can replace hydrogen from its compounds,where it has +1 oxidation state?
a)Na b)Hg c)Zn d)Fe
a,b,c
c,d
a,c
a,c,d
As we have learnt,
Electrochemical Series -
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The standard reduction potential of a large number of electrodes has been measured using a standard hydrogen electrode as the reference electrode. These various electrodes can be arranged in increasing electrode potential.
Hg lies below hydrogen in electrochemical series and is, therefore, less reactive
Therefore, the option number(4) is correct.