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CBSE-IX-Science

11: 2-Structure of the Atom

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  • #7
    Define valency by taking examples of silicon and oxygen.
    Ans : That number of electrons (present in outermost shell) /valence electrons which an atom gives or takes or shares to complete its octet, or acquire stable configuration. Therefore, valency of sulphur = 16= 2,8,6= 2 electrons can be gained easily hence valency is 2.

    valency of oxygen = 8 = 2,6 = 2 electrons can be gained easily hence valency is 2.