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Electron Configuration Review

Total questions: 20

Worksheet time: 7mins

Name
Class
Date
1.
What is the atomic number of this atom?
a)
2
b)
4
c)
6
d)
none of the above
2.

What is the atomic mass of this atom?

a)

2

b)

4

c)

6

d)

none of the above

3.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
4.

What element is this?

a)

Sodium (Na)

b)

Phosphorous (P)

c)

Nitrogen (N)

d)

Sulfer (S)

5.

What element is this?

a)

Carbon (C)

b)

Hydrogen (H)

c)

Aluminum (Al)

d)

Lithium (Li)

6.

Which of the following figures of the Bohr's model are incorrect?

a)

A and B

b)

B and C

c)

B and D

d)

A and D

e)

None

7.

Which orbital notation represents oxygen?

a)
b)
c)
d)
8.

How many electrons can an orbital hold?

a)

1 electron

b)

2 electrons

c)

3 electrons

d)

4 electrons

9.

What element matches this electron configuration?

1s22s22p63s2

a)

Neon

b)

Magnesium

c)

Aluminum

d)

Potassium

10.
What is this element? 
[Ar]4s2
a)
Calcium
b)
Sodium
c)
Scandium
d)
Titanium
11.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
12.

What is the electron configuration for the first two electrons?

a)

1d2

b)

1s2

c)

1f2

d)

1p2

e)

2s2

13.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
14.

Which electron orbital is associated with more energy?

a)

2p

b)

3s

c)

3p

d)

3d

e)

4s

15.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
16.

How many valence does phosphorous have?

a)

2

b)

3

c)

5

d)

10

17.

How many valence electrons does carbon have?

a)

4

b)

5

c)

6

d)

7

18.

How many valence electrons does sodium have?

a)

1

b)

2

c)

3

d)

4

19.

If aluminum loses an electron, it will have a ________ charge and become a(n) ___________.

a)

positive, anion

b)

negatie, anion

c)

positive, cation

d)

negative, anion

20.

If fluorine gains an electron, it will have a _______ charge and become a(n) ____________.

a)

positive, anion

b)

negative, anion

c)

positive, cation

d)

negative cation