General Science Chemistry

નીચેની ધાતુઓને પ્રતિક્રિયાશીલતાના યોગ્ય ક્રમમાં ગોઠવો.

K, Al, Fe, Au, Pb

1
K > Al > Pb > Fe > Au
2
K > Al > Fe > Pb > Au
3
K > Al > Fe > Au > Pb
4
K > Fe > Al > Pb > Au

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