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Which of the following statement is abou...

Which of the following statement is about `Cr_(2) O_(7)^(-)` sturcture?

A

It has neither `Cr - Cr` bonds nor `O - O` bonds

B

It has one `Cr - Cr` bond and seven `Cr - O` bonds

C

It has one `Cr - Cr` bond and six `O - O` bonds

D

It has no `Cr - Cr` bonds and has six `O - O` bonds

Text Solution

Verified by Experts

The correct Answer is:
A
The green magnate is paramagnetic with one uparied electron but the permanganate is diamagnetic.
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Knowledge Check

  • Which of the following statements about Na_(2)O_(2) is not correct?

    A
    It is diamagnetic in nature
    B
    It is derivative of `H_(2)O_(2)`
    C
    `Na_(2)O_(2)` oxidises `Cr^(3+)" to "CrO_(4)^(2-)` in acid medium.
    D
    It is the supar oxide of sodium

  • Which of the following statements about Na_(2)O_(2) is not correct?

    A
    It is diamagnetic in nature
    B
    It is derivative of `H_(2)O_(2)`
    C
    Na_(2)O_(2) oxidation `Cr^(3+)" to "CrO_(4)^(2-)` in acid medium.
    D
    It is the super oxide of sodium.

  • Which of the following statements about H_(2)O_(2) is not true ?

    A
    `H_(2)O_(2)` is used to clean oil paintings
    B
    `H_(2)O_(2)` acts as oxidising as well reducing agent
    C
    Two hydroxyl groups in `H_(2)O_(2)` lie in the same plane
    D
    It retains same structure in liquid and solid form

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    Which of the following statements is correct, about passing H_(2)S gas through acidified K_(2)Cr_(2)O_(7) solution?

    Which of the following statements is correct when SO_(2) is passed through acidified K_(2)Cr_(2)O_(7) solution ?

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