Lesson Worksheet: VSEPR Chemistry

In this worksheet, we will practice identifying the shape of molecules using VSEPR.

Q1:

Bonding pairs and nonbonding pairs dictate the molecular geometry and shape of molecules.

What is the name given to the shape of a molecule that has two bonding pairs and two nonbonding pairs?

  • ABent
  • BTrigonal planar
  • CTetrahedral
  • DSquare planar
  • ELinear

What is the name given to the shape of a molecule that has three bonding pairs and one nonbonding pair?

  • ATetrahedral
  • BBent
  • CTrigonal pyramidal
  • DTrigonal bipyramidal
  • ETrigonal planar

Q2:

Using the AXE method, which of the following AXE notations corresponds to a molecule with a trigonal pyramidal shape?

  • AAXE13
  • BAX4
  • CAXE22
  • DAX3
  • EAXE3

Q3:

Molecules with a steric number of 4 have bond angles that differ by approximately 2.5 and have a tetrahedral, trigonal pyramidal, or bent (nonlinear) shape. What is the bond angle around the central atom in a molecule with a tetrahedral shape?

Q4:

Technetium hexafluoride can be prepared by heating technetium metal with excess F2.

What will the shape of the TcF6 molecule be?

  • ATetrahedral
  • BSquare pyramidal
  • COctahedral
  • DT-shaped
  • ETrigonal bipyramidal

What is the FTcF bond angle in TcF6?

Q5:

The following diagram shows a molecule of hydrazine.

NH2NH2

What is the NNH bond angle in hydrazine most likely to be?

  • A107
  • B90
  • C120
  • D109.5
  • E104.5

Q6:

The Lewis structure of a nitrite ion (NO)2 is shown in the diagram.

NOO

What is the shape of this molecule?

  • ATetrahedral
  • BTrigonal pyramidal
  • CBent
  • DTrigonal planar
  • ELinear

Q7:

Butatriene (HCCCCH)22 is a type of cumulene, a hydrocarbon with three or more consecutive double bonds.

What is the bond angle of a HCH bond in butatriene?

What is the bond angle of a CCC bond in butatriene?

Q8:

Which shape of a simple molecule is most likely if it contains two bonding pairs and no lone pairs?

  • ATetrahedral
  • BLinear
  • CTrigonal bipyramidal
  • DTrigonal planar
  • EOctahedral

Q9:

Put the following molecules in order of increasing bond angle:

  1. Water
  2. Carbon dioxide
  3. Sulfur dioxide
  4. Chlorine trifluoride
  • A1, 3, 2, 4
  • B2, 1, 4, 3
  • C3, 2, 1, 4
  • D4, 1, 3, 2
  • E2, 3, 4, 1

Q10:

Which of the following statements about the VSEPR theory is true?

  • AIt is used to determine the difference in electronegativity between the atoms of a molecule.
  • BIt is used to determine the bond length between the atoms of a molecule.
  • CIt is used to predict the polarity of a molecule.
  • DIt is used to predict the molecular geometry of a molecule.
  • EIt is used to determine the bond strength between the atoms of a molecule.

This lesson includes 35 additional questions and 10 additional question variations for subscribers.

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