Question

Which is correct order of reducing character in case of alkali metals ?

• A. Li < Na < K <Rb< Cs
• B. Cs < K <Rb< Na < Li
• C. Na < K <Rb< Cs < Li
• D. K < Na <Rb< Cs < Li

Answer 1

Answer: (C)

Na < K <Rb< Cs < Li

Answer 2

As we move from sodium to caesium with decrease in ionization energy reducing character increases. For lithium, it is hydration energy which makes it as best reducing agent Thus order of reducing charade is Na < K < Rb < Cs < Li