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Electron configurations Practice 1

Total questions: 21

Worksheet time: 34mins

Name
Class
Date
1.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
2.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
3.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
4.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
5.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
6.

What do you start all electron configurations with?

a)

1s2

b)

1d10

c)

1f14

d)

1p6

7.

The 4 orbitals are

a)

s, p, d, f

b)

a, b, c, d

c)

2, 4, 6, 8

8.
How many electrons can the d sublevel hold?
a)
8
b)
10
c)
2
d)
4
9.

Which element is pictured? (hint: each arrow represents an electron)

a)
neon
b)
fluorine
c)
magnesium
d)
argon
10.

Identify the element in Period 5 that has 1 valence electron? (hint: look at the number at the top of the column-group/family#)

a)
Rb
b)
Nb
c)
Ag
d)
Sb
11.

What element in Period 4 has 5 valence electrons? (hint: look at the number at the top of the column-group/family#)

a)
Zr
b)
As
c)
V
d)
Sb
12.
Which of the following is a p block element?
a)
Ca
b)
Ar
c)
Re
d)
Au
13.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
14.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2s2p3s3p5
b)
1s2s2p3s3p6
c)
1s2s2p3s3p7
15.
How many electrons are in the outer shell of Sodium (Na)?
a)
3
b)
1
c)
2
d)
4
16.

In an electron configuration, what follows 4s?

a)

4p

b)

3d

c)

4s

d)

2f

17.

How many electrons can be found in an s orbital?

a)
2
b)
3
c)
4
d)
1
18.

Which of the following electrons would be the furthest from the nucleus?

a)

1s

b)

2s

c)

2p

d)

3s

19.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
20.

Which area on the periodic table represents the electrons in the "d" sublevel?

a)

representative elements

b)

columns 3-8

c)

rare earth elements

d)

transition elements

21.
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