Isoelectronic species play a major role in predicting chemical and structural similarities. Which of — Nuclear Chemistry and Radioactivity Chemistry Question

💡 Solution & Explanation

A neutral Phosphorus atom has 15 electrons, so $P^{3-}$ has 18. Sulfur has 16, $S^{2-}$ has 18. Chlorine has 17, $Cl^-$ has 18. Argon ($Ar$) has 18. Potassium ($K$) has 19, $K^+$ has 18. Calcium ($Ca$) has 20, $Ca^{2+}$ has 18. Therefore, sets A and B all consist of 18-electron species. Set C species all contain 10 electrons. Set D species all contain 14 electrons.