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WorksheetsElectron Configurations
Total questions: 50
Worksheet time: 2hrs 41mins
Name
Class
Date
1.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
2.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
3.
What is the maximum number of electrons that an orbital can have?
a)
1 electron
b)
2 electrons
c)
3 electrons
d)
4 electrons
4.
How many valence electrons are represented here?
a)
7
b)
5
c)
2
d)
8
5.
How many p orbitals are there in a sublevel?
a)
2
b)
1
c)
4
d)
3
6.
What is this element?
1s22s22p63s23p6
4s23d104p6
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
7.
What atom matches this electron configuration?
[Xe] 6s2 4f14 5d9
[Xe] 6s2 4f14 5d9
a)
Mercury
b)
Gold
c)
Platinum
d)
Thallium
8.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
9.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
10.
How many valence electrons does Chlorine have?
a)
5
b)
2
c)
7
d)
5
11.
How many valence electrons does phosphorus have?
a)
5
b)
2
c)
8
d)
15
12.
What element has the valence shell configuration
3s2 3p2
3s2 3p2
a)
Al
b)
B
c)
Si
d)
Ga
13.
Which element is pictured?
a)
neon
b)
fluorine
c)
magnesium
d)
argon
14.
What noble gas should be used to write the shorthand configuration for Te?
a)
Ar
b)
Kr
c)
Xe
d)
Sb
15.
What atom matches this electron configuration?
1s22s22p63s2
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
16.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
17.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
18.
The electron configuration of an atom is 1s22s22p6. The number of electrons in the atom is
a)
3
b)
6
c)
8
d)
10
19.
What is this element?
1s22s22p63s2
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
20.
What is the noble gas shorthand electron for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p4
21.
What is the electron configuration for this atom?
a)
1s22s22p6
b)
1s22s22p5
c)
1s22s22p3
d)
2s22p3
22.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
23.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
24.
Anions are _______ that form ____________ ions and __________ electrons.
a)
nonmetals, positive, lose
b)
nonmetals, negative, gain
c)
metals, positive, gain
d)
metals, positive, lose
25.
What is the electron configuration of Sulfur using noble gas method
a)
[Ne]3s1
b)
[Ne]3s23p3
c)
[Ne]3s23p4
26.
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
27.
This orbital diagram represents:
a)
C
b)
B
c)
N
d)
O
28.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Aufbau's
b)
Hund's
c)
Pauli exclusive
29.
Which guideline, Hund’s rule or the Pauli exclusion principle, is violated in the following orbital diagrams?
a)
Hund's
b)
Aufbau's
c)
Pauli's Exclusive
30.
Which electron configuration belongs to a Chloride (Cl-) ion?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
d)
1s2 2s2 2p6 3p7
31.
What electron configuration matches an oxygen ion?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
32.
The electron configuration of an atom is 1s22s22p6. The number of valence electrons in the atom is
a)
3
b)
6
c)
8
d)
10
33.
Write the electronic structure for Cr3+ ion
a)
[Ar]4s13d5
b)
[Ar]4s13d2
c)
[Ar]4s03d3
d)
[Ar]3d3
34.
Which element is depicted from this orbital diagram
a)
Fluorine
b)
Neon
c)
Chlorine
d)
Argon
35.
What is the symbol represented by this Aufbau diagram?
a)
C
b)
B
c)
N
d)
O
36.
The isotope of Bromine, bromine-67, has how many neutrons?
a)
34
b)
33
c)
32
d)
31
37.
What is an isotope?
a)
An element with the same number of neutrons and different number of protons
b)
An element with the same number of protons and different number of neutrons
c)
An element with the same number of protons and different number of electrons
d)
An element with the same number of neutrons and different number of electrons
38.
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
39.
Ions are:
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
40.
Barium atoms want to form...
a)
an anion
b)
a cation
c)
an onion
d)
a cuddly kitten friend
41.
Why are ions formed?
a)
To make our lives difficult
b)
Because atoms want 8 valence electrons
c)
Because atoms have the same number of protons and electrons
d)
Because atoms gained neutrons
42.
Cations are...
a)
Positive
b)
Negative
c)
Neutral
d)
Purring
43.
Anions are...
a)
Positive
b)
Negative
c)
Neutral
d)
Crying
44.
A Silicon atom wants...
a)
3 more electrons
b)
3 less electrons
c)
4 more or less electrons
d)
2 more electrons
45.
What is the ionic symbol for a phosphorus atom?
a)
P-3
b)
P+3
c)
P-2
d)
P+2
46.
What is the ionic symbol for a Tin atom?
a)
Sn+4 or Sn-4
b)
Sn-4
c)
Sn+3
d)
Sn-3
47.
Make sure you get enough Potassium in your diet!
a)
Huh?
b)
K
c)
I <3 bananas
d)
Sure
48.
What will nitrogen's charge be as an ion (What is the charge of the nitride ion)?
a)
+3
b)
-3
c)
0
d)
-1
49.
How many total electrons does O-2 (an oxide ion) have?
a)
8
b)
10
c)
6
d)
18
50.
Magnesium's ion is:
a)
Mg+1
b)
Mg+2
c)
Mg-1
d)
Mg-2
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