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Ionic mobility of which of the following...

Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?

A

Na

B

K

C

Rb

D

Li

Text Solution

Verified by Experts

The correct Answer is:
D
Key concept More the extent of hydration lesser is the ionic mobility.
In all the alkali metals, `Li^+` ion is smallest . Thus, extent of hydration is maximum in `Li^+` ion.
i.e. the dissolution of `Li^+` in water occurs and get hydrated .Smaller the size of a cation. greater is the extent of hydration and lesser in the ionic mobility .
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Knowledge Check

  • Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are pur under an electric field?

    A
    `Li^(+)`
    B
    `Na^(+)`
    C
    `K^(+)`
    D
    `Rb^(+)`

  • Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are pur under an electric field?

    A
    `Li^(+)`
    B
    `Na^(+)`
    C
    `K^(+)`
    D
    `Rb^(+)`

  • Which of the following metal ions is colored in aqueous solution ?

    A
    `Sc^(3+)`
    B
    `Ti^(4+)`
    C
    `Zn^(2+)`
    D
    `V^(4+)`

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    Which one of the following transition metals ions is colourless in aqueous solution ?

    Which one of the following transition metals ions is colourless in aqueous solution ?

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