Verified Answer :

Standard reduction potential is the likelihood that a species will be reduced. It is written in the form of a reduction half reaction.
Lithium  has the lowest standard reduction potential.

Answer: C. lithium

Explanation:

Standard reduction potential is the tendency for an element to gain electrons or get reduced ,measured at standard conditions i.e. when concentration is 1 M and temperature is 298 K.

It is given by: \(E^0_{M^+/M}\)

\(E^0_{[Cl^{2}/2Cl^-]}=+1.36V\)

\(E^0_{[Fe^{2+}/Fe]}=-0.41V\)

\(E^0_{[Li^{+}/Li]}=-3.04V\)

\(E^0_{[Zn^{2+}/Zn]}=-0.76V\)

Thus lithium has the lowest tendency to accept electrons and thus has lowest standard reduction potential.

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