Give the electron geometry (eg), molecular geometry (mg), and hybridization for CH₃^-. A) eg = tetrahedral; mg = trigonal pyramidal; sp³ B) eg = tetrahedral; mg = tetrahedral; sp³ C) eg = trigonal pyramidal; mg = trigonal pyramidal; sp³ D) eg = trigonal planar; mg = trigonal planar; sp²

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The CH₃^- ion has four regions of electron density around the central carbon atom, leading to a tetrahedral electron geometry. However, with one lone pair, the molecular geometry is trigonal pyramidal. The hybridization is sp³.

Give the Electron Geometry (Eg), Molecular Geometry (Mg), and Hybridization