Q.

Which one among the following metals is the weakest reducing agent.

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a

Rb

b

Na

c

K

d

Li

answer is C.

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Detailed Solution

Among alkali metals Li in powerful reducing agent because of its high enthalpy of hydration and Na is weak reducing agent

The reducing power depends on enthalpy of fusion , enthalpy of vaporization , enthalpy of ionization and enthalpy of hydration

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Which one among the following metals is the weakest reducing agent.