A model for NH, is shown in the chem3D window. NH3 has trigonal pyramidal geometry.

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter10: Molecular Structure And Bonding Theories
Section: Chapter Questions
Problem 10.110QE
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A model for NH3 is shown in the chem3D window. NH3 has trigonal pyramidal geometry.
ball & stick
labels
Rotate the molecule until you have a feeling for its three-dimensional shape. How many atoms are bonded to the central atom? 4
If you consider only the three outer atoms, what shape do they define? triangle
Consider the bond angles at the central atom. Do they all have approximately the same numerical value? no
What is the approximate numerical value of this angle? 109 v degrees.
Does the central atom lie in the plane defined by the three other atoms? yes v
Are all three positions about the central atom equivalent, or is one of them different from the other two. one is different v
all the same
For practice, type in the name of the geometry of the molecule: trigonal pyramidal
one is different
Transcribed Image Text:A model for NH3 is shown in the chem3D window. NH3 has trigonal pyramidal geometry. ball & stick labels Rotate the molecule until you have a feeling for its three-dimensional shape. How many atoms are bonded to the central atom? 4 If you consider only the three outer atoms, what shape do they define? triangle Consider the bond angles at the central atom. Do they all have approximately the same numerical value? no What is the approximate numerical value of this angle? 109 v degrees. Does the central atom lie in the plane defined by the three other atoms? yes v Are all three positions about the central atom equivalent, or is one of them different from the other two. one is different v all the same For practice, type in the name of the geometry of the molecule: trigonal pyramidal one is different
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