객관식
What is the electron geometry of H_2O?
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12. Molecular Shapes & Valence Bond Theory
Electron Geometry
객관식
Determine the electron geometry of the nitrogen atom within methylamine, CH3NH2.
A
Linear
B
Trigonal Pyramidal
C
Tetrahedral
D
Trigonal Planar
검증된 단계별 안내1
Identify the central atom of interest, which is the nitrogen (N) atom in methylamine (CH\_3NH\_2).
Count the regions of electron density around the nitrogen atom. These include both bonding pairs (N-H and N-C bonds) and lone pairs of electrons on nitrogen.
Nitrogen in methylamine has three single bonds (two N-H bonds and one N-C bond) and one lone pair of electrons, making a total of four regions of electron density.
According to the VSEPR (Valence Shell Electron Pair Repulsion) theory, four regions of electron density around a central atom correspond to a tetrahedral electron geometry.
Therefore, the electron geometry of the nitrogen atom in methylamine is tetrahedral, even though the molecular shape (considering only atoms) is trigonal pyramidal due to the lone pair.
