Unit 2: Bonds

Naming and Formulas

100

The name for a compound containing aluminum and oxygen is _

What is Al₂O₃

200

If one carbon atom bonds to four fluorine atoms, the chemical formula would be _. The name would be_.

What is CF_4, carbon tetrafluoride

300

The formula for 5 oxygens and 2 nitrogens is _. The name for this compound is _.

What is N₂O₅? What is dinitrogen pentoxide?

400

The charge of the copper in Cu₂O₃ is _. The name for the compound would be _.

What is 3+ charge? What is Copper (III) oxide?

500

What is the name for H₃PO3? What about the formula for carbonic acid

Phosphorous acid, H₂CO₃

Lewis Structures

100

Selenium tetrabromide has _ lone pair(s) on the central atom

1

200

Consider the structure for BrCl₅. How many lone pairs are on the Br? 

1 lone pair

300

The Lewis structure for ClNO has 

a) two single bonds

b) 1 single bond to the Cl and 1 double bond to the O

c) 1 double bond to the O and 1 single bond to the Cl

d) 2 double bonds

1 double to the O and 1 single bond to the Cl

400

Chlorine trifluoride has _ lone pairs on the central atom.

2

500

The most stable structure for sulfate contains 

_ single bonds and _ double bonds

2, 2

Lewis Structures II

100

What is the formal charge on the nitrogen in Ammonium?

+1

200

Which molecule has the strongest nitrogen-nitrogen bond?

a) N₂

b) CH₃N₂CH₃

c) CH₃(NCH₃)₂CH₃

d) all the same

N₂

300

Draw the structure for ClO₂^-. 

_ single bonds _ double bonds _ lone pairs on central atom

1, 2, 2 

400

Consider CF₄. Which of the following has an identical structure to it.

a) SiBr₄

b) SeBr₄

c) NCl₃

d) SO₄^2-

SiBr₄

500

There are three possible structures for N₂O. Which is the least stable?

Single bond to the N and triple bond to the O

FC Analysis

N2 = 5-6-1 = -2

N2= 5-4-0 = +1

O = 6-3-2= +1

VSEPR Stuff

100

What are the bond angles of the carbons in

CH₃COH

C1 109.5

C2 120

200

Which molecule has a bond angle of 120?

a) CO₂

b) NH₃

c) IF₃

d) SO₃

SO₃

300

Which structure(s) has a bond angle less than 120?

a) NH₃

b) SO₂

c) CI₄

All of the structures have bond angles less than 120!

400

A central atom makes three bonds and has two lone pairs. What is the molecular geometry?

a) T-Shaped

b) Tetrahedral

c) Trigonal Planar

d) Trigonal Pyramidal

T-Shaped

500

The electron geometry for I₃^- is _. Molecular geometry is _.

What is trigonal bipyramidal; linear?

& Friends

100

Rank the following bonds from least polar to most polar:

P-Cl

K-S

N-N

H-F

C-H

N-N< C-H< P-Cl<H-F<K-S

200

How many covalent bonds are represented in the formula NH₄Cl?

A) 0

B) 2

C) 1

D) 4

4

300

Ammonium phosphide has a formula of _

(NH₄)₃P

400

Rank the C-C bonds in the following structures based on increasing strength. Then rank them based on length.

CH₃CH₃

CH₂CH₂

CHCH

Strength

CH₃CH₃ < CH₂CH₂ < CHCH

Length

CH₃CH₃ > CH₂CH₂ > CHCH

500

Consider XeF₂ and XeF_4. What is the overall polarity of each molecule?

Both nonpolar