Ammonia has four electron pairs around nitrogen. Its electron-pair geometry is therefore:
ATrigonal flat
BOctahedral
CTetrahedral
DLinear shape
Answer & Solution
Correct answer: C. Tetrahedral
1. Four regions of electron density push apart in three dimensions.
2. The furthest-apart arrangement of four points is the corners of a tetrahedron.
3. So the electron-pair geometry is tetrahedral.
_Source: OpenStax Chemistry 2e, Chapter 7, Chemical Bonding and Molecular Geometry._
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