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The radius of which of the hydrated ion ...

The radius of which of the hydrated ion is the highest?

A

` Li_((aq))^(oplus)`

B

`Na_((aq))^(oplus)`

C

`K_((aq))^(oplus)`

D

`Rb_((aq))^(oplus)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Li^(oplus)` ion having the smallest size and the highest charge density is the most hydrated alkali metal and thus the size of `[Li(H_2O)_x ]^(oplus) or Li^(oplus)` (aq) is the highest
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The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order (1) L i + < K + < N a + < R b + (2) R b + < K + N a + < L I + (3) K + < N a + < R b + < L i + (4) N a + < L i + < K + < R b +

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Knowledge Check

  • Statement 1 , Among the alkali metals, caesium salts exhibit the maximum electrical conductance in aqueous solutions. Statement 2 : The radius of hydrated caesium ion is the highest among alkali metals.

    A
    Statement 1 is True, statement 2 is True , Statement 2 is Correct explanation for Statement 1.
    B
    Statement 1 is True, Statement 2 is True , Statement 2 is NOT a correct explanation for Statement 1.
    C
    Statement 1 is True, Statement 2 is False
    D
    Statement 1 is False, Statement 2 is True.

  • Assertion : Among the alkali metals, caesium salts exhibit the maximum electrical conductance in aqueous solutions. Reason : The radius of hydrated caesium ion is the highest among alkali metals.

    A
    If both (A) and (R) are correct and (R) is the correct explanation of (A).
    B
    If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
    C
    If (A) is correct, but (R) is incorrect.
    D
    If both (A) and (R) are incorrect.

  • Which of the following has the highest mass?

    A
    1 g-atorn of C
    B
    1 mole of `CH_4`
    C
    10 mL of water
    D
    `3.011 xx 10^(23)` atoms of oxygen

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