Which halogen does not show positive oxidation state? from Chemis

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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?

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464. Name two compounds in which halogens exhibit + ve oxidation states.

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465. Which halogen does not show positive oxidation state?

Fluorine does not show positive oxidation state.

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466.

Name the radioactive halogen.

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467. Arrange the halogens in order of their m.pt. and b.pt.

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468. Which halogen will produce O₂ and O₃, on passing through water?

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469. OF₂ is called oxygen difluoride rather than fluorine oxide, why?

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470.

Write the balanced chemical equation for the reaction of Cl₂ with hot and concentrated NaOH. Is this reaction is redox reaction? Justify.

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