VSEPR Review

According to VSEPR theory, atoms and unshared pairs orient themselves so that

• they are all in the same plane.

• they are at 90 degree angles.

• they are as close to each other as possible.

• they are as far apart as possible.

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom

Which of the following shapes has an unshared pair of electrons on the central atom?

• linear

• trigonal pyramidal

• trigonal planar

• tetrahedral

Which molecule shape has three atoms bonded to the central atom and no unshared pairs on the central atom?

• tetrahedral

• trigonal pyramidal

• trigonal planar

• bent

Draw the Lewis structure for CF₄ and determine its molecular shape.

• trigonal planar

• trigonal pyramidal

• bent

• tetrahedral

Which of the following molecular shape is bent?

• SCl₂

• CO₂

• PH₃

• NCl₃

Choose the correct molecular shape for SO₃.

• trigonal planar

• trigonal pyramidal

• bent

• tetrahedral

What molecular shape would CS₂ have?

• linear

• trigonal pyramidal

• trigonal planar

• tetrahedral

What molecular geometry would PBr₃ have?

• trigonal pyramidal

• trigonal planar

• tetrahedral

• linear

Choose the correct molecular shape for NH₄⁺.

• trigonal planar

• trigonal pyramidal

• bent

• tetrahedral