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Assertion : Superoxides of alkali metals...

Assertion : Superoxides of alkali metals are paramagnetic.
Reason : Superoxides contain the ion `O_(2)^(-)` which has one unpaired electron.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
a
Both Assertion and Reason are true and Reason is the correct explanation of Assertion .
Preasence of unpaired electrons in superoxides of alkali metals make them paramagnetic.
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Knowledge Check

  • Assertion : Supeoxides of alkali matels are paramagnetic. Reason : Superoxides conatain the ion O_(2)^(-) which has one unpaired electron in its anti-bonding molecule orbital.

    A
    If assertion is true but the reason is false
    B
    If assertion is false but reason is true
    C
    If both assertion and reason are true and the reason is the correct explanation of assertion
    D
    If both assertion and reason are true and the reason is not the correct explanation of assertion

  • Assertion: Superoxide ion is paramagnetic whereas peroxide ion is diamagnetic. Reason: Superoxide ion [O=O]^(-) has one unpaired electron whereas peroxide ion [O=O]^(-) has no unpaired electron.

    A
    If both asseration and reson are true and the reason is the correct explanation of the asseration.
    B
    If both asseration and reason are true ans the reason is the correct explanation of the asseration.
    C
    If asseration is true but reason is false.
    D
    If asseration is false but reason is true.

  • All alkali metal superoxides contain the ion [O_(2)] . They are

    A
    paramagnetic
    B
    colored compounds
    C
    oxidizing agents
    D
    all of these

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    Assertion (A) : Mercurous ion is paramagnetic. Reason (R ): It contains one unpaired electron.

    Alkali metals form peroxides and superoxides except

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    Which one of the transition metal ions have no unpaired electron

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