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Resonance

Total questions: 14

Worksheet time: 1hrs 23mins

Name
Class
Date
1.
Define the term resonance structure
a)
Delocalization of electrons in an atom
b)
Delocalization of π electrons within a molecule
c)
Spread of π electrons in an atom
d)
Spread of π electrons within a molecule
2.
How many resonance structure for SO2 ?
a)
1
b)
2
c)
3
d)
4
3.

Choose the electron dot diagram that correctly shows the bonding in methane CH4.

a)

A

b)

B

c)

C

d)

D

4.

Choose the electron dot diagram that correctly shows the bonding for the nitrite ion, NO2-:

a)

A

b)

B

c)

C

d)

D

e)

E

5.

What is the formal charge on oxygen for the hydronium ion H3O+?

a)

+3

b)

+1

c)

-2

d)

-3

e)

0

6.

Choose the electron dot diagram that correctly shows the bonding in H2N2:

a)

A

b)

B

c)

C

d)

D

e)

E

7.

Are A and B resonance structures of each other?

a)

Yes

b)

No

c)

Cannot be determined from the information given

8.

In the structure shown, which C-C bond is the strongest?

a)

a

b)

b

c)

c

d)

d

e)

e

9.

Which of the compounds is/are aromatic?

a)
b)
c)
10.

What is resonance?

a)

Lineal structure with different placement of atoms

b)

Lewis structure with different arrangement of electrons

c)

Lewis structure that are in equilibrium

d)

They are the same as isomers

11.

Which carbocation statements is true?

a)

They are the most stable because they have positive charge.

b)

They are the same as carboanions.

c)

They are the unstable because they don't complete the octet.

12.

Which arrow is used to represent two contributors in a resonance hybrid?

a)
b)
c)
d)
13.

Is this a resonance structure?

a)

Yes

b)

No

14.

Which is the best contributor for resonance structure?

a)

I

b)

II

c)

III