Considering the isoelectronic series S2-, Cl-, Ar, K+, Ca2+, and the fact that electron-electron repulsion in the outermost shell influences effective nuclear charge and hence atomic radius, which of the following statements is INCORRECT?
The radius decreases from S2- to Ca2+.
Ca2+ has the smallest radius in the series.
Electron-electron repulsion is the dominant factor influencing the radius in this series, causing the radius to increase from S2- to Ca2+.
All species have the same number of electrons but different numbers of protons.
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