Practice Problem: VSEPR Theory and Molecular Geometry

The video tutorial explains valence shell electron pair repulsion (VSEPR) theory and its application in determining molecular geometry. It covers the hybridization, electron domain geometry, and molecular shape of four molecules: nitrate ion, nitrogen trichloride, chlorine trifluoride, and xenon tetrafluoride. Each molecule's Lewis structure is analyzed to determine the hybridization and geometry, considering the impact of lone pairs on molecular shape.

What is the primary focus of valence shell electron pair repulsion theory?

• Determining the color of molecules

• Calculating the mass of molecules

• Predicting the reactivity of molecules

• Understanding the arrangement of electron pairs around a central atom

What is the hybridization of the central atom in the nitrate ion (NO3-)?

• sp

• sp3

• sp2

• sp3d

What is the electron domain geometry of the nitrate ion (NO3-)?

• Tetrahedral

• Trigonal planar

• Linear

• Bent

What is the molecular shape of nitrogen trichloride (NCl3)?

• Tetrahedral

• Trigonal planar

• Trigonal pyramidal

• Linear

In chlorine trifluoride (ClF3), where do the lone pairs prefer to reside?

• None of the above

• Both axial and equatorial positions

• Axial positions

• Equatorial positions

What is the hybridization of the central atom in xenon tetrafluoride (XeF4)?

• sp3

• sp3d

• sp3d2

• sp2

What is the molecular shape of xenon tetrafluoride (XeF4)?

• Octahedral

• Trigonal bipyramidal

• Tetrahedral

• Square planar