EGE Chemistry Practice Questions - Unified State Exam (EGE) In Chemistry (ЕГЭ по химии) Exam

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

1s²2s²2p⁶3s²3p⁶3d⁴4s² 1s²2s²2p⁶3s²3p⁶3d⁵4s¹ 1s²2s²2p⁶3s²3p⁶3d⁶ 1s²2s²2p⁶3s²3p⁶4s²4p⁴

Correct Answer:

1s²2s²2p⁶3s²3p⁶3d⁵4s¹

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