Understanding VSEPR Theory

What does VSEPR stand for?

• Valence Shell Electron Pair Rotation

• Variable Shell Electron Pair Rotation

• Variable Shell Electron Pair Repulsion

• Valence Shell Electron Pair Repulsion

Why does beryllium dichloride have a linear shape?

• Because it has more than eight electrons in its valence shell

• Because it has triple bonds

• Due to the repulsion between two electron pairs

• Due to the presence of lone electron pairs

What is the bond angle in a molecule of CO2?

• 120 degrees

• 109.5 degrees

• 180 degrees

• 107 degrees

What is the bond angle in a trigonal planar molecule like BF3?

• 109.5 degrees

• 180 degrees

• 120 degrees

• 107 degrees

Which molecule is an example of a trigonal planar shape?

• CH4

• BF3

• H2O

• NH3

What is the bond angle in a tetrahedral molecule like CH4?

• 180 degrees

• 120 degrees

• 109.5 degrees

• 116 degrees

How does the presence of a lone electron pair affect the shape of NH3?

• It does not affect the shape

• It leads to a trigonal planar shape

• It makes the molecule linear

• It results in a trigonal pyramidal shape

What causes the bent shape in water (H2O)?

• The presence of double bonds

• The linear arrangement of hydrogen atoms

• The tetrahedral arrangement of electron pairs

• The repulsion between two lone electron pairs

What impact do lone electron pairs have on molecular geometry?

• They have no impact

• They decrease bond angles

• They increase bond angles

• They make the molecule linear

What next step is recommended after learning VSEPR theory?

• Practicing VSEPR problems

• Studying ionic bonding

• Memorizing the periodic table

• Learning about covalent bonding