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F22 SE Review: Electrons: Lewis Dot and Octet

Total questions: 30

Worksheet time: 26mins

Name
Class
Date
1.

What element is this?

a)

Boron

b)

Lithium

c)

Oxygen

d)

Sulfur

2.

What does the blue circle represent?

a)

proton

b)

neutron

c)

electron

3.

How many energy levels does this atom have?

a)

1

b)

2

c)

3

d)

4

4.

There are several elements that this could be. One of them is listed below. Pick it!

a)

Mg

b)

O

c)

F

d)

Be

5.

How many energy levels does this element have?

a)

Unknown - it represents any element with seven valence electrons.

b)

1

c)

2

d)

3

6.

Draw the Bohr Diagram for B. How many valence electrons does B have?

a)

1

b)

2

c)

3

d)

4

7.

What ion will this form?

a)

1+

b)

1-

c)

2+

d)

2-

8.

What ion will this form?

a)

1+

b)

1-

c)

7+

d)

7-

9.

What ion will K form?

a)

1+

b)

2+

c)

1-

d)

2-

10.

What ion will a atom with 5 valence electrons form?

a)

3+

b)

3-

c)

5+

d)

5-

11.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
12.

This is a Bohr Diagram of Aluminum. How many valence electrons does Aluminum have?

a)

3

b)

4

c)

5

13.

How many valence electrons does Lithium (Li) have?

a)

8

b)

1

c)

5

d)

2

14.

How many valence electrons does Bromine (Br) have?

a)

5

b)

6

c)

7

d)

8

15.
Valence electrons are: 
a)
Electrons farthest away from the nucleus
b)
Electrons closest to the nucleus
c)
Electrons that just come and go - they don't stay with the atom
d)
Electrons in the second shell
16.

How many electrons can the first shell hold?

a)

2

b)

4

c)

6

d)

8

17.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
18.
What is a valence electron?
a)
an electron that is found in the outermost shell of an atom. 
b)
an electron found in the innermost shell of an atom.
c)
an electron found in the middle shell.
19.

According to the diagram below, how many bonds will this atom be able to make?

a)
1
b)
2
c)
3
d)
4
20.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

21.

Which of these is incorrect?

a)
b)
22.
Most elements will gain or lose electrons so that they end up with _______ valence electrons.
a)
2
b)
6
c)
8
d)
10
23.

Which of these is correct?

a)
b)
c)
24.
This could be the dot diagram of 
a)
Ne
b)
Si
c)
Al
d)
Be
25.

How many dots would you put around carbon, a group 14 element?

a)

4

b)

6

c)

8

d)

18

26.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

27.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
28.
A negatively-charged ion.
a)
atom
b)
cation
c)
anion
d)
electron
29.

In a(n) ________ electrons are transferred from one atom to another

a)

ionic compound

b)

covalent compound

30.

Which element is represented by this PES graph?

a)

aluminum

b)

phosphorus

c)

sulfur

d)

silicon

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