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Alkali metals have low ionisation energy...

Alkali metals have low ionisation energy. Why is it so?

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If an element has a low ionisation energy, then it is likely to be __________. (metallic/ nonmetallic).

Explain how hydrogen differs from alkali metals on the basis of ionisation energies.

Knowledge Check

  • First ionisation energy of alkali metals is very low but second ionisation energy is very high because

    A
    alkali metals acquire noble gas configuration after losing one electron
    B
    a large amount of energy is required to remove electron from a cation
    C
    alkali metals can form only univalent ions
    D
    first group elements can lose only one electron.

  • 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

    • Similar Questions

    Explore conceptually related problems

    Explain how hydrogen differs from alkali metals on the basis of ionisation energies.

    If an element has a low ionization energy then it is likely to be _______ [ "metallic"// "non-metallic"]

    A and B belong to same group of periodic table. A has higher atomic number than B . Which will have lower ionisation energy and why?

    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 ?

    The second ionisation enthalpy of an alkaline earth metal is higher than its first ionisation enthaply. Why is it so ?

    The isoelectronic ion having lowest ionisation energy is

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