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Write three genral characteristies of th...

Write three genral characteristies of the s-block of the periodic table which distinguish them form the elements of other blocks.

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General characteristic of s-block elements:
a. s-block elements are lighter than other block elements.
b. They are highly electropositive in nature.
c. They have low ionisation energy.
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Knowledge Check

  • The f-block of the periodic table contains those elements in which :

    A
    Only `4f` orbitals are progressively filled in 6th period.
    B
    Only `5f` orbitals are progressively filled in 7th period.
    C
    4f and 5f orbitals are progressively filled in 6th and 7th periods respectively.
    D
    None
  • The f-block of the periodic table contains those elements in which :

    A
    Only `4f` orbitals are progressively filled in 6th period.
    B
    Only `5f` orbitals are progressively filled in 7th period.
    C
    4f and 5f orbitals are progressively filled in 6th and 7th periods respectively.
    D
    None
  • Na belongs to which block in the periodic table ?

    A
    s-block,
    B
    p-block
    C
    d-block
    D
    None of these
  • CENGAGE CHEMISTRY-S-BLOCK GROUP 1 - ALKALI METALS-Ex 4.1 (Subjective)
    1. Write three genral characteristies of the s-block of the periodic tabl...

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    2. The alkali metals follow the noble gases in their atomic structure. Wh...

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    3. Why is sodium kept immersed in kerosene oil?

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    4. When is a cation highly polarising ? Which alkali metal cation has the...

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    5. Why superoxides of of alkali metals are paramagnetic ?

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    6. Alkali metals are paramagnetic but their salts are dimagnetic. Explain...

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    7. Give reasons for the following. a. LiCI is more covalent than KCI. ...

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    8. The Haber process can be represented as follows

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    9. Why does the reaction. proceed better with KF than with NaF ?

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    10. why lithium is kept wrapped in paraffin wax and not stored in kerosene...

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    11. When is a cation highly polarising? Which alkali metal cation has the ...

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    12. Why cesium can be used in photoelectric cell, while lithium cannot be ...

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    13. Give reason for the decreasing order of the conductivity of the follow...

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    14. NaHCO(3) and NaOH cannot exist together in solution. Why ?

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    15. On exposure to air, sodium hydroxide becomes liquid and after sometime...

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    16. Alkali metals are obtained by the electrolysis of the molten salts and...

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    17. What happens when: a. Potassium metal is dropped in water b. Potas...

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    18. How sodium carbonate is manufactured by the Solvay process ? State the...

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    19. a. Describe one method of manufacture of castic soda. b. What happen...

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