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The reducing property of alkali metals follows the order
(a) Na < K < Rb < Cs < Li (b) K < Na < Rb < Cs < Li
(c) Li < Cs < Rb < K < Na (d) Rb < Cs < K < Na < Li

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A will be right option because reducing property of a metal depends upon hydration energy and as Ki has highest hydration energy so it is most reducing agent
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