why alkali metals are good oxidising agents whereas halogens are good reducing agents
Answers
Answer:
Alkali metals are good reducing agents because alkali metals have one valence electron which they lose to attain stability. Hence, they themselves undergo oxidation causing reduction of others and are good reducing agents. They have a single electron that they want to get rid of and become a +1 cation.
Answer:
Alkali metals are reducing agents. Halogens are oxidizing agents.
Alkali metals have greater atomic radius so less effective nuclear charge on the last she'll. Thus they can loose electrons more readily which means they get oxidized. So they are reducing agents.
Halogens have less atomic radius and so the nuclear charge on last she'll is more. They attract electrons and accept electron. This means they get reduced. So they are oxidizing agents.