The ground-state electron configuration of Cr, Mo, and Ag are exceptions to the Aufbau principle. Which of the following is the electron configuration for Mo A) [Kr]5s¹4d⁵ B) [Kr]5s²4d⁴ C) [Xe]6s²5d⁴ D) [Ar]4s²4d⁴ E) [Kr]5s²4d⁶

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Molybdenum (Mo) has an electron configuration of [Kr]5s¹4d⁵ due to the stability provided by a half-filled d subshell, which is an exception to the typical Aufbau principle.

The Ground-State Electron Configuration of Cr, Mo, and Ag Are