What is the electron configuration for the Co²⁺ ion? A)[Ar]4s¹3d⁶ B)[Ar]3d⁷ C)[Ar]3d⁵ D)[Ar]4s²3d⁹ E)[Ne]3s²3p¹⁰

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The correct electron configuration for the Co^2+ ion is [Ar]3d^7. Cobalt (Co) in its neutral state has an electron configuration of [Ar]4s^23d^7. When it loses two electrons to become Co^2+, it loses the two 4s electrons first, resulting in the configuration [Ar]3d^7.

What Is the Electron Configuration for the Co2+ Ion

What Is the Electron Configuration for the Co²⁺ Ion