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The standard reduction potential of fluorine is (2.87) maximum and thus it can be oxidized by any reagent 1 /2 F 2 + e→ F – E° = maximum Further more, electrolysis can liberate F 2 , but F 2 being very reactive, is again reduced to F – ion the most stable ion.

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The p-Block Elements

Short Answer Type

461. Why fluorine shows an oxidation state of – 1 only?

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462. Arrange the following in order of decreasing property indicated:
(a) M—F, M—Cl, M—Brand M— l. (Ionic character)
(b) F₂,Cl₂,Br₂,I₂. (reactivity)

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463. Fluorine can not be prepared from fluorides by chemical treatment. Why?

The standard reduction potential of fluorine is (2.87) maximum and thus it can be oxidized by any reagent
1 /2 F₂ + e→ F^– E° = maximum
Further more, electrolysis can liberate F₂, but F₂ being very reactive, is again reduced to F^–ion the most stable ion.

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