ChemistryThe screening constant  σ value of valence electron in oxygen is

The screening constant  σ value of valence electron in oxygen is

  1. A

    3.10

  2. B

    3.80

  3. C

    3.45

  4. D

    4.15

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    Solution:

    1s22s22p4for ns electrons  
         5×0.35=1.75   
        (n – 1) electrons    
         2×0.85=1.7
          Total = 3.45   

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