Molecular Shapes Quiz

What does the VSEPR theory help predict?

• The shapes of molecules

• The temperature of molecules

• The color of molecules

• The weight of molecules

Which of the following is a characteristic bond angle of a tetrahedral shape?

• 180°

• 109.5°

• 120°

• 90°

In which group of elements is the trigonal planar shape most commonly found?

• Group 1

• Group 3 or 13

• Group 7 or 17

• Group 5 or 15

What is the main difference between trigonal planar and trigonal pyramidal shapes?

• Type of central atom

• Bond angles

• Presence of unshared electron pairs

• Number of bonds

What causes the bent shape in water molecules?

• High temperature

• Presence of unshared electron pairs

• Strong magnetic field

• Absence of hydrogen bonds

Which molecule is an example of a linear shape due to the absence of unshared electron pairs?

• CH4

• H2O

• NH3

• CO2

What is the bond angle in a linear molecule like CO2?

• 90°

• 120°

• 109.5°

• 180°

Which of the following is NOT a characteristic of a bent molecular shape?

• Linear arrangement

• Bond angle of 104.5°

• Presence of unshared electron pairs

• Central atom with two bonds

What is the only possible shape for diatomic molecules like O2?

• Linear

• Tetrahedral

• Trigonal planar

• Bent

Which theory explains the predictable shapes of molecules based on electron repulsion?

• Kinetic Theory

• Quantum Theory

• Molecular Orbital Theory

• VSEPR Theory