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Why is potassium lighter than sodium

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Why is potassium lighter than sodium

    • Posted by Amrita Srisaahiti Kondapalli 6 years, 11 months ago

    CBSE > Class 11 > Chemistry
    • 1 answers

    Anuj Maurya 6 years, 11 months ago

    The increase in shell size outweighs the pull of the core on the outer shell electron. So K is lighter than Na.

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