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Assertion : Cuprous ion (Cu^(+)) has unp...

Assertion : Cuprous ion `(Cu^(+))` has unpaired electrons while cupric ion `(Cu^(++))` does not.
Reason : Cuprous ion `(Cu^(+))` is colourless where as cupric ion `(Cu^(+2))` is blue in the aqueous solution.

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:
D
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Explain why Cu^+ ion is not stable in aqueous solution ?

Cuprous ion is colourless, while cupric ion is colured because

Cu^(2+) ions will be reduced to Cu^(+) ions by the addition of an aqueous solution of

Cu^(2+) ions will be reduced to Cu^(+) ions by the addition of an aqueous solution of:

Knowledge Check

  • Assertion : Cuprous ion (Cu^(+)) is colouless whereas cupric ion (Cu^(++)) is blue in the aqueous solution. Reason : Cuprous ion (Cu^(+)) has unpaired electrons while cupric ion (Cu^(++)) does not .

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

  • Cuprous ion is colourless, while cupric ion is colured because

    A
    Both have unparied electrons in d-orbital
    B
    Cuprous ions has imcomplete d-orbital and cupric ion has a completed d-orbital
    C
    Both have half-filled `p` and d-orbitals
    D
    Cuprous ion has a completed d-orbital and cupric ion has an incomplete d-orbital

  • Cu^(2+) ions will be reduced to Cu^(+) ions by the addition of an aqueous solution of:

    A
    `Kl`
    B
    `KCl`
    C
    `KSCN`
    D
    `KCN`