Unit 6 Jeopardy

Lewis Structures

100

Which of the following has a central atom with less than an octet of electrons? 

A) H₂O 

B) NH₃ 

C) BH₃ 

C) BH₃

200

For which of the following molecules are resonance structures necessary to describe the bonding satisfactorily? 

A) NO₃- 

B) CO₂ 

C) PF₃ 

A) NO₃-

300

How many nonbonding electrons are on N in the lewis structure of CN-?

2

Polarity

100

If the molecule XF₃ has a dipole moment, then X must be 

A) Boron 

B) Carbon 

C) Phosphorus

C) Phosphorus

200

SF₄ is polar. True or False?

True

300

If XCl₂ does not have a dipole moment, then X must be 

A) Carbon

B) Beryllium

C) Sulfur

B) Beryllium

Hybridization

100

Molecules that are predicted to have an sp hybridization have a ______ molecular geometry

linear

200

Which of the following will have sp³ hybrid orbitals:

A) CH₄

B) BeF₂

C) SO₃

A) CH₄

300

How many sigma and pi bonds are in C₂H₄ (ethylene)?

A) 5 sigma, 3 pi

B) 4 sigma, 2 pi

C) 5 sigma, 1 pi

C) 5 sigma, 1 pi

VSEPR

100

According to VSEPR theory, ______ should be at a position of _______ repulsion

electrons, minimal

200

Identify the electron and molecular geometry of a molecule if it has 5 clumps and 1 lone pair (ex. SF₄)

Electron geometry: Trigonal Bipyramidal

Molecular geometry: Seesaw

300

Which molecule has the smallest bond angle between F and X?

A) BF₃

B) BrF₃

C) NF₃

B) BrF₃