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Why is potassium lighter than sodium?¿?¿

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Why is potassium lighter than sodium?¿?¿

    • Posted by Prakhar J 6 years, 10 months ago

    CBSE > Class 11 > Chemistry
    • 2 answers

    Harshita Verma 6 years, 10 months ago

    Basically, in the case of sodium and potassium the increase in shell size outweighs the pull of the core on the outer shell electron and so potassium is less dense than sodium. When we more from Na to K, effect of increase in volume is more pronounced as compared to effect of increase in atomic mass.

    2Thank You

    Shreya Dixit 6 years, 10 months ago

    Because K has less density than Na

    1Thank You

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