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 each atom? c. O d. C

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Hello everyone. Today, we have the following problem if core electrons completely shielded valence electrons from nuclear charge and the valence electrons did not shield one another from nuclear charge at all. What would be the effect of nuclear charge experienced by the valence electrons of each atom? So recall that our effect of nuclear charge is equal to the following. We have Z which represents the number of protons. We subtract that by the number of core electrons. So oxygen on the periodic table is in group six and its atomic number is eight. So since Z represents protons, we have eight protons for our oxygen and then subtract that by the core electrons. And to do that or to determine what the core electrons are, we simply take the atomic number and we subtract that by the number of valence electrons, we said oxygen and an atomic number of eight and the valance electrons was six. So that equals two. So we have eight minus two or six and that gives us Andrew B as our final answer overall, I hope this helped. And until next time

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Key Concepts

Effective Nuclear Charge (Z_eff)

Shielding Effect

Valence Electrons