Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 10 - Sections 10.1-10.8 - Exercises - Problems by Topic: 35a

Answer

Electron geometry: tetrahedral Molecular geometry: trigonal pyramidal Idealized bond angle: $109.5^{\circ}$ Deviation from idealized bond angle : yes

Work Step by Step

$PF_3$ has 3 covalent bonds and one lone pair of the P atom. Its electron geometry is tetrahedral. Its molecular geometry is trigonal pyramidal since P atom is bonded to 3 F atoms. Its idealized bond angle is that of the tetrahedral geometry, $109.5^{\circ}$. But the presence of the lone pair causes deviation from the idealized bond angle.
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