Multiple Choice
What is the electronic geometry of SF_6?
17
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
Which molecular geometry best describes the structure of a water (H_2O) molecule?
A
Bent
B
Trigonal planar
C
Linear
D
Tetrahedral
Verified step by step guidance1
Identify the central atom in the water molecule, which is oxygen (O).
Determine the number of electron groups around the central atom. Oxygen in H\_2O has two bonded hydrogen atoms and two lone pairs, making a total of four electron groups.
Use the VSEPR (Valence Shell Electron Pair Repulsion) theory to predict the electron geometry. Four electron groups correspond to a tetrahedral electron geometry.
Consider the effect of lone pairs on molecular shape. Lone pairs occupy space and repel bonded atoms, causing the shape to deviate from the ideal tetrahedral geometry.
Conclude that the molecular geometry, which describes the arrangement of atoms (not lone pairs), is bent due to the two lone pairs pushing the hydrogen atoms closer together.
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