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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
Melting point decreases as the strength of metallic bonding decreases with increasing size of the atom.
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Knowledge Check

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

    A
    Na
    B
    K
    C
    Rb
    D
    Cs

  • 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
    • MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -NCERT FILE ( NCERT Exemplar Problems ( Multiple Choice Questions -I) )
    1. The alkali metals have low melting point. Which of the following alkal...

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    2. Alkali metals react with water vigorously to form hydroxides and dihyd...

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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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    5. Which of the carbonates given below is unstable in air and is kept in ...

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    6. Metals form basic hydroxides. Which of the following metal hydroxide i...

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    7. Some of the Group 2 metal halides are covalent and soluble in organic ...

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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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    12. When sodium is dissolved in liquid ammonia, a solution of deep blue co...

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    13. By adding gypsum to cement

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    14. Dead burnt plaster is .

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    15. Suspension of slaked lime in water is known as

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    16. Which of the following elements does not form hydride by direct heatin...

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    17. The chemical formula of soda ash is

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    18. A substance which gives a brick red flame and breaks down on heating t...

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    19. Which of the following statements is true about Ca(OH)(2)?

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    20. A chemical A is used for the preparation of washing soda to recover am...

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