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Periodic Trends and electron configurations

Total questions: 50

Worksheet time: 1hrs 15mins

Name
Class
Date
1.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
2.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
3.

What is the electron configuration of Iodine?

a)

[Kr]5s24d105p6

b)

[Kr]5s24d106p6

c)

[Kr]5s25d106p6

d)

None of the above

4.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
5.

What atom matches this electron configuration?

[Xe] 6s24f145d9

a)

Mercury

b)

Gold

c)

Platinum

d)

Thallium

6.

There are __ energy levels

a)

1

b)

2

c)

7

d)

8

7.
How many atomic orbitals are there in the p sublevel?
a)
2
b)
3
c)
4
d)
5
8.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
9.
Which electron configuration belongs to Chlorine (Cl)?
a)
1s2 2s2 2p6 3s2 3p5
b)
1s2 2s2 2p6 3s2 3p6
c)
1s2 2s2 2p6 3s2 3p7
10.
Identify the Electron Configuration for Aluminum (Al)
a)
1s2 2s2 2p6 3s2 3p1
b)
1s2 2s2 2p6 3s2 3p3
c)
1s2 2s2 2p6 3s2 4p1
11.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
12.
What is the noble gas configuration for phosphorus?
a)
[Ar] 3p5
b)
[He] 3s2 3p5
c)
[Ne] 3s2 3p3
d)
[Na] 3s2 3p5
13.
[Ne]3s23p5 is the noble gas configuration for which element?
a)
chlorine
b)
fluorine
c)
sulfur
d)
aluminum
14.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
15.
What noble gas should be used to write the shorthand configuration for Te?
a)
Ar
b)
Kr
c)
Xe
d)
Sb
16.

Each row on the periodic table represents:

a)

an energy level

b)

a sublevel

c)

an electron

d)

an orbital

17.

Energy levels are denoted by:

a)

letters

b)

numbers

c)

a combination of letters and numbers

d)

subscripts

18.

Is the following electron configuration correct? Why or why not?


1s22s22p63s23p64s24d104p65s1

a)

No. 4p6 should be after 5s1.

b)

No. It should be 3d10 not 4d10

c)

Yes. All electrons are represented properly.

d)

Yes.

19.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
20.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
21.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
22.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6
23.
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
24.
Electron arrangement that uses arrows
a)
Electron configuration
b)
Shorthand configuration
c)
Lewis dot structure
d)
Orbital diagram
25.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
26.
This orbital diagram represents:  
a)
C
b)
B
c)
N
d)
O
27.
What is incorrect about this orbital diagram?
a)
Both arrows in the 2p box should be pointing up
b)
There is nothing incorrect with this diagram
c)
In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
d)
All the arrows should be pointing up.
28.
 The diagram above represents two electrons with 
a)
a. opposite spins.
b)
 b. the same spin.
c)
c. different energies.
d)
d. different energy levels.
29.

Which example shows a violation of Hund's Rule?

a)

A

b)

B

c)

C

d)

D

30.
All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.
a)
Aufbau principle
b)
Pauli exclusion principle
c)
Hund’s rule
d)
Core Notation
31.

Which of the following is written correctly?

a)

A

b)

B

c)

C

d)

D

32.

What element's orbital notation is pictured here?

a)

Ar

b)

Br

c)

Cu

d)

Cl

33.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
34.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
35.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
36.
As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 
a)
the number of protons increases, so attraction to electrons increases
b)
the number of energy levels increases
c)
the number of electrons increases
d)
the atomic mass increases
37.

Which of the following will have a higher electronegativity than arsenic (As)?

a)

Carbon (C)

b)

Neon (Ne)

c)

Antimony (Sb)

d)

Germanium (Ge)

38.

What is a cation's charge?

a)

positive

b)

negative

c)

neutral

d)

depends on the element

39.

What is an anion's charge?

a)

positive

b)

negative

c)

neutral

d)

depends on the element's charge

40.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

41.
Identify the element that is non-reactive (inert) with 4 energy levels.
a)
Krypton
b)
Argon
c)
Potassium
d)
Calcium
42.
How many valence electrons are in an atom of K?
a)
3
b)
8
c)
4
d)
1
43.
How many valence electrons are in an atom of Ar?
a)
2
b)
8
c)
4
d)
1
44.

Check all of the following that could actually exist in a correctly written electron configuration.

a)

4s3

b)

3p4

c)

2p8

d)

6d3

e)

1s1

45.

Electron configuration of hydrogen (H)

a)

1s11s^1  

b)

1s21s^2  

c)

2s12s^1  

d)

2s2 2p12s^2\ 2p^1  

46.

Write the electron configuration

a)

1s22s22p6

b)

1s12s12p3

c)

1s22s22p63s2

d)

1s22s22p63s3

47.
Which is associated with more energy? 
a)
2p
b)
2s
c)
3p
d)
1s
48.
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
49.

Choose the statement below that accurately describes the number of neutrons in Argon-41.

a)

It is impossible to know how many neutrons are in Argon-41.

b)

Argon-41 contains 18 neutrons in an atom.

c)

Argon-41 contains 41 neutrons in an atom.

d)

Argon-41 contains 23 neutrons in an atom.

50.

Identify the element with the following electron configuration: 1s22s22p63s1

a)

Helium

b)

Oxygen

c)

Magnesium

d)

Neon

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