【Daily Question】Theoretical Foundation 2020.07.10
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This post was last edited by Qingse Nianhua on 2020-7-10 08:09. Multiple-choice question: What are the spatial geometric structure of the PCl3 molecule and the hybridization type of its central atom? A. Tetrahedral, sp3 hybridization B. Triangular pyramidal, asymmetric sp3 hybridization C. Square planar, dsp2 hybridization D. Equilateral triangular, sp2 hybridization. Answer: B. Hint: Those who can explain the solution process will receive an additional reward; the answer can be found in the replies
B. Triangular pyramidal, asymmetric sp3 hybridization
P and N are elements in the same group. The hybridization type of P in PCl3 is the same as that of N in NH3, namely unequal sp3 hybridization. The four hybrid orbitals adopt a tetrahedral arrangement; one of these hybrid orbitals is occupied by a lone pair, while the remaining three hybrid orbitals form three covalent single bonds with three Cl atoms, resulting in a trigonal pyramidal molecular shape.