The reducing power of a metal depends on various factors. Suggest the factor which makes Li metal the strongest reducing agent in a aqueous solution :
(a) Sublimation enthalpy (b) Ionisation enthalpy
(c) Hydration enthalpy (d) Electron-gain enthalpy
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(c) Due to high hydration energy of cation, the standard reduction potential of is more negative among all alkali metal cations hence Li acts as strong reducing agent in water.