The correct order for the reactivity of the following metals is
Fe > Ni > Sn > Pb > H > Cu > Au
A series in which metals are arranged in the decreasing order of their reactivity is called reactivity series.
The arrangement of metals as per reactivity series is: K > Na > Ca > Mg > Al > Zn > Fe > Ni > Sn > Pb > H > Cu > Ag > Au. Therefore, the correct order is Fe > Ni > Sn > Pb > H > Cu > Au.