Ch. 4 Molecular Geometry & Bond Angles

Question 1

What is the molecular geometry and bond angle of a molecule with 3 bonding pairs and 1 lone pair of electrons on the central atom?
A. Trigonal Planar, 120°
B. Trigonal Pyramidal, ~107°
C. Tetrahedral, 109.5°
D. Bent, 104.5°

Answer 1

B. Trigonal Pyramidal, ~107°

Question 2

Which of the following molecules exhibits a linear molecular geometry?
A. H₂O
B. CO₂
C. NH₃
D. CH₄

Answer 2

B. CO₂ at 180 degrees

4-2=2 no lone pairs

Question 3

What is the correct molecular geometry for XeF₄?
A. Trigonal Bipyramidal
B. Tetrahedral
C. Square Planar
D. See-Saw

Answer 3

C. Square Planar

Question 4

Which molecular shape has bond angles approximately equal to 90° and contains 5 elements and 1 lone pair on the central atom?
A. Trigonal Bipyramidal
B. Square Pyramidal
C. Octahedral
D. T-Shaped

Answer 4

B. Square Pyramidal

Question 5

A molecule with 3 bonding pairs and 2 lone pairs on the central atom will have which geometry?
A. Tetrahedral
B. Trigonal Bipyramidal
C. T-Shaped
D. Bent

Answer 5

C. T-Shaped

Question 6

What would be the molecular shape for an compound like this PO4 ^3- ?

Answer 6

Tetrahedral
5-4 = 1 which means there is 3 bonds that are single and 1 bond that is double

doing the lewis structure it has no lone pairs which indicates its a tetrahedral.

Question 7

What is VSEPR theory invlove?

Answer 7

The shape of the molecule and bond angles

Question 8

memorize chart

Answer 8

Question 9

Which of the following molecules has an ideal bond angle of approximately 120°?

NH3

H2O

CO2

SO2

CH4

Answer 9

SO2

Question 10

Which of the following molecules has a seesaw molecular geometry?

ClF4-

SF4

PF5

XeF2

BF3

Answer 10

SF4