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Chemistry: Which of the following is not trigonal planar?
(A) Carbonate ion
(B) Nitrate ion
(C) Boron trichloride
(D) Phosphorus trichloride
(E) Sulfur trioxide
2 Answers
- Anonymous8 years agoFavorite Answer
D) PCl3 will not be trigonal planar because it is sp3 hybridized. P has 5 valence electrons total and it only uses 3 in bonding to the chlorines, meaning that it will have a lone pair of valence electrons left over in addition to the 3 Cl bonds it forms, making it tetrahedral and not trigonal planar.
