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The alkali metals have low melting point...

The alkali metals have low melting point. Which of the following alkali metal is expected to melt if the room temperature rises to `30^(@)C` ?

A

Na

B

K

C

Rb

D

Cs

Text Solution

Verified by Experts

The correct Answer is:
D
Among alkali metals, m.p. decreases as the strength of metallic bonding decreases with increasing size of the atom . Thus , Cs has the lowest m.p. and melts at `30^(@)`C.
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Knowledge Check

  • The alkali metal having low melting point is

    A
    Fr
    B
    Cs
    C
    Rb
    D
    Na.

  • The alkali metal having highest melting point is

    A
    Li
    B
    Na
    C
    Cs
    D
    Rb

  • Which of the following is NOT an alkali metal ?

    A
    Caesium
    B
    Strontium
    C
    Rubidium
    D
    Potassium
    • PRADEEP-S-BLOCK ELEMENTS (ALKALI AND ALKALINE EARTH METALS) -NCERT EXEMPLAR PROBLEMS WITH ANSWERS , HINTS AND SOLUTIONS (MULTIPLE CHOICE QUESTIONS - I)
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    3. The reducing power of a metal depends on various factors. Suggest the ...

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    4. Metal carbonates decompose on heating to give metal oxide and carbon d...

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    8. The order of decreasing ionisation ethalpy in alkali metals is

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    9. The solubility of metal halides depends on their nature, Lattice entha...

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    10. Amphoteric hydroxides react with both alkalies and acids. Which of the...

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    11. In the synthesis of sodium carbonate, the recovery of ammonia is done ...

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