Extremadura PAU Chemistry Practice Questions - Extremadura PAU Chemistry Exam - Química 2o Bachillerato UEx 2026 Exam

What is the ground-state electron configuration of a neutral chromium atom (Z = 24)?

[Ar] 4s² 3d⁴ [Ar] 3d⁵ 4s¹ [Ar] 4s² 3d⁵ [Ar] 4s¹ 3d⁶

Correct Answer:

[Ar] 3d⁵ 4s¹

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