the reducing power of element is measured in terms of standard electrode potential (E^0) responding to the following transformation that is tendency to lose electron
M------>M^+ + e^-
i). reducing nature of first group elements.all the alkali metals have high negative values of (E^0) which indicates that they have strong reducing nature and hence they can be used as strong reducing agents.
lithium is the most powerfull and sodium is the least powerful reducing agent in the group.
ii). reducing nature of s group elements.all the alkaline earth metals have high negative values of standard reduction potential (E^0) and I have strong reducing agent however reducing power of alkaline earth metals is less than that of alkali metals.
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