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    sarah1994's Avatar
    sarah1994 Posts: 8, Reputation: 1
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    #1

    Feb 24, 2011, 03:39 AM
    Why alkali metals have largest radii?
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    Unknown008 Posts: 8,076, Reputation: 723
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    Feb 24, 2011, 08:31 AM

    You forgot something... they have the largest atomic radii in their periods.

    Yes, now what do you think is the answer?

    Remember that atomic radius is affected by:
    - Number of shells between the nucleus and the last electron shell
    - The attractive nature of the nucleus towards the electrons
    - The repulsion between the electrons within or outside the shell
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