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What's valency

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What's valency

    • Posted by Bidisha Biswas 4 years, 7 months ago

    CBSE > Class 09 > Science
    • 2 answers

    Kyōka ( Demon Snow ) 4 years, 7 months ago

    No. Of atoms lost or gained by an atom to get its duplet or octet complete. For e.g : Oxygen has electronic configuration as : 2,6 so it has to gain 2 electrons to get its octet complete. Therefore its valency is 2.?

    1Thank You

    Yogita Ingle 4 years, 7 months ago

    The combining capacity of the atoms to form molecules either with same or different elements is defined as valency.
    Method to find valency:
    If Atom has less than four electrons in its outermost shell, the valency of an atom is equal to the number of electrons present in the valence shell.
    If the outer shell has more than four electrons, the valency = 8 - the number of electrons in the outer shell.
    Example 1: Carbon
    Electronic configuration of carbon 2, 4
    Carbon has 4 electrons in its outermost shell, so the valency of Carbon is 4.

    0Thank You

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