VSEPR Theory

What does VSEPR stand for?

• Valence Shell Electron Pair Rotation

• Variable Shell Electron Pair Repulsion

• Variable Shell Electron Pair Rotation

• Valence Shell Electron Pair Repulsion

What determines the 3D shape of a molecule according to VSEPR theory?

• The presence of hydrogen bonds

• The number of core electrons

• The number of valence electrons

• The arrangement that minimizes electron pair repulsion

Why does beryllium dichloride form a linear shape?

• Because it wants to minimize electron pair repulsion

• Because it follows the octet rule

• Because it has double bonds

• Because it prefers a 2D structure

What shape does BF3 form?

• Linear

• Tetrahedral

• Trigonal planar

• Bent

Why do molecules with a trigonal planar shape have a 120-degree bond angle?

• Because of the presence of triple bonds

• To minimize repulsion between electron pairs

• To accommodate lone electron pairs

• To minimize repulsion between double bonds

What causes the bent shape in SO2?

• A linear arrangement of atoms

• A double bond

• A triple bond

• An unshared electron pair

What is the bond angle in a tetrahedral molecule?

• 120 degrees

• 180 degrees

• 109.5 degrees

• 107 degrees

What shape does NH3 adopt?

• Linear

• Tetrahedral

• Bent

• Trigonal pyramidal

How does the presence of lone electron pairs affect the bond angle in NH3 compared to a tetrahedral shape?

• It increases the bond angle

• It decreases the bond angle

• It makes the bond angle variable

• It does not affect the bond angle

What is the bond angle in water (H2O)?

• 107 degrees

• 109.5 degrees

• 105 degrees

• 120 degrees