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Assertion (A): Alkali metals can form io...

Assertion (A): Alkali metals can form ionic hydrides which contain hydride ion, H.
Reason (R ): The alkali metals have low EN. Their hydrides conduct electricity, when fused and liberate hydrogen at the anode.

A

Statement I is true, Statement II is true, Statement II is the correct explanation for statement I.

B

Statement I is true, Statement II is true, Statement II is not the correct explanation for Statement I.

C

Statement I is true, Statement II is false.

D

Statement I is false, Statement II is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Statement I and Statement II are correct and Statement II gives the correct explanation.
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Except for lithium, alkali metals form their hydrides at what temperature.

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Knowledge Check

  • Statement - 1 : The alkali metals can form ionic hydrides which contain the hydride ion H^(-) and Statement - 2 : The alkali metals have low electronegativity, their hydrides conduct electricity when fused and liberate hydrogen at the anode.

    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

  • Which metal does not form ionic hydride-

    A
    `Na`
    B
    `Rb`
    C
    `Ca`
    D
    `Be`

  • Which of the alkali metals form complex hydrides ?

    A
    Li
    B
    Na
    C
    K
    D
    Both A and B

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    Assertion (A): Alkali metals are strong reducing agents. Reason (R ): They have only one electron to be lost form their valence shells.

    Assertion (A)Alkali metals form solid bicarbonates. Reason ( R) LiHCO_3 exists in aqueous solution.

    Which of the following alkali metals form complex hydrides ?

    Assertion (A): s- block elements can form ionic hydrides. Which on electrolysis in fused state give H_(2) gas at cathode. Reason (R) : s-block elements have low IE and low EN as compared to p-block elements.

    Which of the following alkali metals form complex hydrides?

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