VSEPR Theory
Chemistry ⇒ Chemical Bonding and Structure
VSEPR Theory starts at 11 and continues till grade 12.
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See sample questions for grade 12
A molecule has five electron domains: three bonding pairs and two lone pairs. What is its molecular geometry?
A molecule has six electron domains: four bonding pairs and two lone pairs. What is its molecular geometry?
A molecule has three electron domains: two bonding pairs and one lone pair. What is its molecular geometry?
Describe the difference between electron domain geometry and molecular geometry.
Describe the effect of increasing the number of lone pairs on the bond angles in a molecule.
Describe the steps to determine the molecular geometry of a molecule using VSEPR theory.
Explain why PF5 is able to have more than eight electrons around the central atom.
Explain why the bond angle in H2O is less than 109.5°.
Explain why the bond angle in SO2 is less than 120°.
Explain why the bond angles in NH3 are less than those in CH4.
Which of the following has a bent molecular geometry?
(1) BeCl2
(2) H2O
(3) CO2
(4) CH4
Which of the following has a trigonal bipyramidal electron domain geometry?
(1) PF5
(2) SF4
(3) ClF3
(4) XeF2
Which of the following molecules has a bond angle closest to 120°?
(1) CH4
(2) BF3
(3) NH3
(4) H2O
Which of the following molecules has a linear molecular geometry but a trigonal bipyramidal electron domain geometry?
(1) XeF2
(2) SF4
(3) PF5
(4) IF5
According to VSEPR theory, electron pairs around a central atom arrange themselves to minimize _________.
The bond angle in a perfect tetrahedral molecule is ______ degrees.
True or False: All molecules with four electron domains have a tetrahedral molecular geometry.
True or False: In VSEPR theory, multiple bonds (double or triple) are counted as one electron domain.
True or False: Lone pairs occupy more space than bonding pairs in VSEPR theory.
True or False: The geometry of a molecule can affect its polarity.
