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As atomic number increases, atomic size ...

As atomic number increases, atomic size increases in a group and decreases along a period . Give reasons for this behaviour. 

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As the atomic number increases atomic size increases in a group, while it decreases in a period. Give reasons.

Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Give reason for this behaviour.

Knowledge Check

  • Atomic radius decreases in a period due to

    A
    Increase in nuclear attraction
    B
    Decrease in nuclear attraction
    C
    Increase in number of electrons
    D
    Decrease in number of electrons

  • The atomic radius decreases in a period due to

    A
    Increase in nuclear attraction
    B
    Decrease in nuclear attraction
    C
    Increase in number of electrons
    D
    Decrease in number of electrons

  • The atomic radius decreases in a period due to

    A
    Increase in nuclear attraction
    B
    Decrease in nuclear attraction
    C
    Increase in number of electrons
    D
    Decrease in number of electrons

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    As the atomic number of halogens increases down the group, the halonges

    In a period from left to right A) nuclear charge increases B) effective nuclear charge increases C) atomic size decreases D) Ionisation potential increases Correct among the above are

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