We’re being asked to identify the bond angles around nitrogen in glycine. Since the Lewis structure for glycine is already given, we simply need to do the following steps:
Step 1: Determine the number of electron groups around the indicated atom.
Step 2: Determine the electron geometry and bond angle using this:
Electron Regions Electronic Geometry Bond Angles
2 linear 180˚
3 trigonal planar 120˚
4 tetrahedral 109.5˚
5 trigonal bipyramidal 90˚, 120˚, and 180˚
6 octahedral 90˚ and 180˚
Consider the Lewis structure for glycine, the simplest amino acid:
What are the approximate bond angles at the nitrogen?
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