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Predict which of the following will be c...

Predict which of the following will be coloured in aqueous solution ? `Ti^(3+), V^(3+), Cu^(+), Sc^(3+), Mn^(2+), Fe^(3+)` and `Co^(2+)`. Give reasons for each.

Text Solution

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Ions having incompletely filled d - subshell are likely to be coloured due to possibility of d-d transition by absorbing visible light. Those with completely filled or empty d - orbitals are colourless. Thus `Ti^(3+)(d^(1)), V^(3+)(d^(2)), Mn^(2+)(d^(5)), Fe^(3+)(d^(5)), Co^(2+)(d^(7))` are coloured due to d - d transition. `Cu^(+)(d^(10))` and `Sc^(3+)(d^(0))` are colourless.
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Which of the following ions will be coloured in aqueous solution ? Ti^(3+), V^(3+), MnO_(4)^(-), Sc^(3+), Mn^(2+), Fe^(3+), Co^(2+) .

Which of the following are coloured in aqueous solution ? Give reasons : V^(3+), Cu^(+) , Sc^(3+) ,Fe^(3+)

Knowledge Check

  • In aqueous solution, which gives Fe^(3+) ion -

    A
    `[Fe(CN)_(6)]^(3-)`
    B
    `[Fe(CN)_(6)]^(4-)`
    C
    `Fe_(2)(SO_(4))_(3)`
    D
    `NH_(4)(SO_(4))_(2).FeSO_(4).6H_(2)O`
  • In aqueous solution, which gives Fe^(3+) ion -

    A
    `[Fe(CN)_(6)]^(3-)`
    B
    `[Fe(CN)_(6)]^(4-)`
    C
    `Fe_(2)(SO_(4))_(3)`
    D
    `(NH_(4))_(2)SO_(4).FeSO_(4).6H_(2)O`
  • Which of the following compounds released CO_2 from NaHCO_3 solution?

    A
    B
    C
    D
  • Similar Questions

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    Which of the following are coloured in aqueous solution? Give rea-sons: V^3+,Cu^(2+),Sc^(3+), Fe^(3+)

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    Which of the following ions would form colourless complexes? Cu^(2+), Zn^(2+), Ti^(3+), Ti^(4+), Cd^(2+)

    State which of the following are polynomials and which are not ? Give reasons. 2x^(3)

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