PRE-LAB EXPERIMENT 4: MOLECULAR GEOMETRY

The acronym VSEPR stand for

• very strong electron pair repulsion.

• varied symmetry electrostatic proton reaction.

• venomous snakes enjoy pink ribbons.

• valence shell electron pair repulsion.

VSEPR theory is used to predict

• the number of unshared pairs of electrons in a Lewis structure.

• the number of multiple bonds in a Lewis structure.

• the three-dimensional geometry of a molecule.

• the three-dimensional crystal lattice structure of ionic compounds.

Any molecule with only two atoms must be linear. Three-atom molecules such as BeCl₂ can also be linear. For linear molecules, the bond angle is

• $360\degree$

• $180\degree$

• $120\degree$

• $90\degree$

Molecules such as boron trichloride that have three bonded atoms and no lone pair electrons on the central atom have what shape?

• trigonal planar

• trigonal pyramidal

• trigonal bipyramidal

• tetrahedral

Which molecule would have this molecular geometry?

• BF₃
• CH₄
• PCl₅
• CO₂

Tags

NGSS.MS-PS1-1

What shape would this have?

• Trigonal planar

• Pyramidal

• Tetrahedral

• Bent

According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?

• Pairs of valence electrons
• Inner shell electrons
• Mobile Electrons
• Electrons closest to the nucleus

*

• linear
• trigonal planar
• trigonal pyramid
• bent of angular

What is the measure of a tetrahedral bond angle?

• 90 Degrees
• 109.5 Degrees
• 120 Degrees
• 180 Degrees

What molecular shape is the structure shown here? (BeCl₂)

• linear
• bent
• trigonal planar
• tetrahedral