Which of the following ion will have maximum magnetic moment? — Atomic Structure Chemistry Question

💡 Solution & Explanation

Maximum magnetic moment corresponds to the maximum number of unpaired electrons. (a) Fe$^{3+}$ is $3d^5$ (5 unpaired). (b) Cr$^{3+}$ is $3d^3$ (3 unpaired). (c) Ti$^{4+}$ is $3d^0$ (0 unpaired). (d) Co$^{3+}$ is $3d^6$ (4 unpaired). Fe$^{3+}$ has the maximum (5). Therefore, correct answer is A.