Molecular Geometry and VSEPR Theory Quiz

What does VSEPR Theory help us understand about molecules?

• The color of the molecule

• The geometric arrangement of electron groups

• The speed of molecular reactions

• The weight of the molecule

What is the molecular geometry of ammonia (NH3) when lone pairs are considered?

• Tetrahedral

• Trigonal planar

• Linear

• Trigonal pyramidal

Why is the bond angle in NH3 slightly less than the theoretical 109.5°?

• Due to the absence of lone pairs

• Due to the repulsion caused by lone pairs

• Because of the presence of triple bonds

• Because of the presence of double bonds

What is the molecular geometry of CO2?

• Tetrahedral

• Linear

• Trigonal planar

• Bent

How does the presence of lone pairs affect the shape of H2O?

• It makes the shape linear

• It results in a bent shape

• It makes the shape trigonal planar

• It results in a tetrahedral shape

What is the electron geometry of BH3?

• Bent

• Linear

• Trigonal planar

• Tetrahedral

Why does BH3 have a trigonal planar shape?

• Due to the presence of triple bonds

• Because it lacks lone pairs

• Due to the presence of double bonds

• Because it has lone pairs

What is the molecular geometry of SF4?

• Tetrahedral

• Seesaw

• Square planar

• Trigonal bipyramidal

In SF4, where does the lone pair occupy?

• Central position

• Axial position

• None of the above

• Equatorial position

What is the significance of lone pairs in determining molecular geometry?

• They determine the molecular weight

• They influence the shape by repelling bonding pairs

• They only affect the color of the molecule

• They have no effect