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CBSE-IX-Science

11: 2-Structure of the Atom

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  • #9
    has completely filled K and L shells. Explain.
    Ans : Na has atomic number 11, so its electronic configuration is = 2,8,1

    When it gives away its outermost shell single electron it changes to Na+ =10= 2,8

    The above configuration indicates completely filled K,L shells.