Determine the total sum of all unpaired electrons present in the ground state electronic configurati — Atomic Structure Chemistry Question
Question
Determine the total sum of all unpaired electrons present in the ground state electronic configurations of the gaseous ions $Fe^{2+}$, $Co^{2+}$, and $Ni^{2+}$.
Answer: C
💡 Solution & Explanation
$Fe^{2+}$ ($d^6$) has 4 unpaired electrons. $Co^{2+}$ ($d^7$) has 3 unpaired electrons. $Ni^{2+}$ ($d^8$) has 2 unpaired electrons. Sum = $4 + 3 + 2 = 9$.
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