Problem: If core electrons completely shielded valence electrons from nuclear charge (i.e., if each core electron reduced nuclear charge by 1 unit) and if valence electrons did not shield one another from nuclear charge at all, what would be the effective nuclear charge experienced by the valence electrons of the following atoms?K

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FREE Expert Solution

Recall that the effective nuclear charge is the force exerted by the nucleus onto an electron and is given by:

Zeff = Z - S

where Z = nuclear charge or atomic number and S = shielding constant. 

Potassium, K

  • Group 1A → valence electron = 1 e-
  • atomic number = 19
    • core electrons = 18 e-
    • valence electron = 1 e-


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Problem Details

If core electrons completely shielded valence electrons from nuclear charge (i.e., if each core electron reduced nuclear charge by 1 unit) and if valence electrons did not shield one another from nuclear charge at all, what would be the effective nuclear charge experienced by the valence electrons of the following atoms?

K