Which of the following, if any, is the correct ground state electron configuration for Cr A) [Ar] 4s²3d⁴ or 1s²2s²2p⁶3s²3p⁶4s²3d⁴ B) [Ar] 4s¹3d⁶ or 1s²2s²2p⁶3s²3p⁶4s¹3d⁶ C) [Ar] 4s¹3d⁵ or 1s²2s²2p⁶3s²3p⁶4s¹3d⁵ D) [Ne] 4s¹3d⁵ or 1s²2s²2p⁶3s²3p⁶4s¹3d⁵ E) None of the above

Question

Quizplus · Accepted Answer

The correct ground state electron configuration for Cr (Chromium) is [Ar] 4s1 3d5. This is because Chromium partially fills the 4s orbital and completely fills the 3d orbital up to 5 electrons to achieve a more stable and lower energy configuration due to exchange energy and symmetry.

Which of the Following, If Any, Is the Correct Ground