Identify the ground-state electron configuration for Se²⁻. A) [Ar]4s²3d¹⁰4p⁴ B) [Ar]4s²3d¹⁰4p² C) [Ar]4s²4p⁶ D) [Ar]4s²3d¹⁰4p⁶ E) [Ar]4s²3d⁸4p⁶

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The electron configuration can be broken down as follows: Se: [Ar]4s23d104p4 ²⁻: 3d10 4s2 4p6 3d10 4s2 4p6 3d10 4s2 4p6 3d10 4s2 4p6 3d10 4s2 4p6 3d10 4s2 4p6⁻¹ Combining the two configurations, we get: [Ar]4s23d104p4 3d10 4s2 4p6 3d10 4s2 4p6 3d10 4s2 4p6 3d10 4s2 4p6 3d10 4s2 4p6 3d10 4s2 4p6⁻¹ Simplifying this expression, we get choice D.

Identify the Ground-State Electron Configuration for Se2⁻

Identify the Ground-State Electron Configuration for Se²⁻