Question

Li is the strongest reducing agent whereas Lit is the weakest oxidising agent. Comment on it? ​

Answer 1

Alkali metals act as strong reducing agents as their ionization energy values are low. Since, ionization decreases on moving down from Li to Cs, the reducing property increases in same order. Thus, Li is the weakest reducing agent while Cs is the strongest reducing agent amongst alkali metals in a free gaseous state.

Answer 2

Lithium is strongest reducing agent

This high hydration enthalpy compensates the high energy needed to remove electron (in second step). Thus Li has greater tendency to lose electrons in solution than other alkali metals. Thus, Li is the strongest reducing agent.