Question

Q. Which of the following has the maximum number of unpaired electrons ?
A \(M g^{2+}\)
B \(T i^{3+}\)
c \(V^{3+}\)
(D) \(\mathrm{Fe}^{2+}\)

Answer 1

Solution:
\(M g^{2+}=1 s^{2} 2 s^{2} 2 p^{6}=\) nounpaired electron
\(T i^{3+}=1 s^{2} 2 s^{2} 2 p^{6} 3 p^{6} 3 d^{1}=\) one unpairedelectron
\(V^{3+}=1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{2}=\) two unpairedelectron
\(F e^{2+}=1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{6}=\) four unpaired electron

Answer 2

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