Multiple Choice
What is the molecular geometry of the PF4+ ion?
56
views
12. Molecular Shapes & Valence Bond Theory
Molecular Geometry
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
The molecular geometry of the CHF3 molecule is ________, and the molecule is ________.
A
trigonal pyramidal; polar
B
tetrahedral; nonpolar
C
tetrahedral; polar
D
trigonal planar; nonpolar
Verified step by step guidance1
Identify the central atom in the CHF3 molecule, which is carbon (C).
Determine the number of regions of electron density around the central atom. Carbon is bonded to three fluorine atoms and one hydrogen atom, so there are four bonding regions and no lone pairs.
Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to predict the molecular geometry. Four bonding regions with no lone pairs correspond to a tetrahedral geometry.
Assess the polarity of the molecule by considering the electronegativities of the atoms. Fluorine is highly electronegative compared to hydrogen, so the C-F bonds are polar, and the molecule has an overall dipole moment.
Conclude that the molecular geometry of CHF3 is tetrahedral, and the molecule is polar due to the uneven distribution of electron density.
1:33mWatch next
Master Molecular Geometry with Two Electron Groups with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Molecular Geometry practice set
Problem sets built by lead tutorsExpert video explanations