pBlock ElementsII 1 Question 73
68. In aqueous solution, chlorine is a stronger oxidising agent than fluorine.
$(1984,1 \mathrm{M})$
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Answer:
Correct Answer: 68. F
Solution:
- Halogens are all good oxidising agent and their oxidising power decreases from top to bottom $\left(\mathrm{F} _{2}\right.$ to $\left.\mathrm{I} _{2}\right)$ in group. Any halogen above in group oxidises halides down in group from their aqueous solution. Hence, $\mathrm{Cl} _{2}$ can oxidise $\mathrm{Br}^{-}$to $\mathrm{Br} _{2}$, $\mathrm{I}^{-}$to $\mathrm{I} _{2}$ but cannot oxidise $\mathrm{F}^{-}$to $\mathrm{F} _{2}$ rather $\mathrm{F} _{2}$ can oxidise $\mathrm{Cl}^{-}$to $\mathrm{Cl} _{2}$.
