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(a) of the ions A^(+),CO^(2+) and Ti^(+)...

(a) of the ions `A^(+),CO^(2+)` and `Ti^(+)`, which one will be coloured in aqueous solution? (Atomic no. s: Ag=47,Co=27,Ti=22)
(b) If each ore each one of the above ionic species is in turn placed in a magnetic field, how will it respond and why?

Text Solution

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The correct Answer is:
(a) `CO_(2+)` will be coloured because it contains unpaired electrons. On the other hand ,`Ag^(+)` has completely filled `3d` subshell and `Ti^(4+)` has empty `3d` subshell, therefore , they will be coloureless.
(b) `Co^(2+)` will be attracted by a magnetic field while `Ag^(+)` and `Ti^(4+)` ions will be repelled.
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(a) OF the ions Ag^(+), Co^(2+) and Ti^(4+) , which onewill be coloured in aqueous solutions? ( Atomic nos. : Ag = 47 , Co = 27 ,T I = 22) (b) If each one of the above ionic species is in turn placed in a magnetic field, how will it response and why ?

Of the ions Co^(2+), Sc^(3+) and Cr^(3+) which ones will give coloured aqueous solutions and how will each of them respond to a magnetic field and why?

Knowledge Check

  • In which of the following paris both the ions are coloured in aqueous solution? (Atomic number, Sc - 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)

    A
    `Ni^(2+)` and `Cu^(+)`
    B
    `Sc^(3+)` and `Ti^(3+)`
    C
    `Sc^(3+)` and `Co^(2+)`
    D
    `Ni^(2+)` and `Ti^(3+)`

  • Which of the following pair are both the ions coloured in aqueous solution ("At. no." Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)

    A
    `Sc^(3+), Co^(2+)`
    B
    `Ni^(2+),Cu^(+)`
    C
    `Ni^(2+),Ti^(3+)`
    D
    `Sc^(3+),Ti^(3+)`

  • Form the following species, Ti^(3+),V^(3+),Sc^(3+),Fe^(3+),Co^(3+), Cu^+ and Mn^(3+) , Which two will not be coloured in aqueous solution ?

    A
    `Mn^(3+)` and `Co^(3+)`
    B
    `V^3 ` and ` Co^(3+)`
    C
    `TI^(3+) `and `Sc^(3+)`
    D
    `Sc^(3+)`and `Cu^+`

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    Which one of the following ions is the most stable in aqueous solutions ? (At. No. Ti=22, V=23, Cr= 24 , Mn = 25)

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

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

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    Which one of the following forms a colourless solution in aqueous medium ? (Atomic number : Sc =21, Ti = 22, V = 23 , and Cr = 24 )

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