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Electron Configuration and Periodic Trends

Total questions: 96

Worksheet time: 1hrs 23mins

Name
Class
Date
1.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
2.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
3.
What electron configuration matches an oxygen atom?
a)
1s22s22p63s2, 3p64s23d104p5
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p64s23d1
4.
Which of the following is the smallest in size?
a)
N3-
b)
O2-
c)
F-
d)
Na+
5.
Which of the following is the smallest in size?
a)
K
b)
Na
c)
Li
d)
Cs
6.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
7.
How many valence electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
8.
How many electrons can the first energy level hold?
a)
1
b)
2
c)
8
d)
0
9.
An orbital can at most hold how many electrons?
a)
1 electron
b)
2 electrons
c)
3 electrons
d)
4 electrons
10.
What atom is represented here?
a)
Carbon
b)
Nitrogen
c)
Oxygen
d)
Fluorine
11.
What is the electron configuration for this atom?
a)
1s22s22p6
b)
1s22s22p5
c)
1s22s22p3
d)
2s22p3
12.
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
13.
Which is associated with more energy? 
a)
2p
b)
2s
c)
3p
d)
1s
14.
When an atom loses a valence electron, it becomes a(n) _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
15.
When an atom gains a valence electron, it becomes a(n) _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
16.
Atoms that gain & lose electrons are called _________
a)
ions
b)
isotopes
c)
radioactive
d)
corrosive
17.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
18.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
19.
Cations are _______ that form ____________ ions and __________ electrons.
a)
nonmetals, positive, lose
b)
nonmetals, negative, gain
c)
metals, positive, gain
d)
metals, positive, lose
20.
Anions are _______ that form ____________ ions and __________ electrons.
a)
nonmetals, positive, lose
b)
nonmetals, negative, gain
c)
metals, positive, gain
d)
metals, positive, lose
21.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
22.

How many electrons can an p sublevel hold?

a)

2

b)

3

c)

6

d)

10

23.

How many electrons can an f sublevel hold?

a)

2

b)

6

c)

10

d)

14

24.
How many electrons can an s sublevel hold?
a)
1
b)
2
c)
3
d)
4
25.
How many atomic orbitals are there in the p sublevel?
a)
2
b)
3
c)
4
d)
5
26.
How many atomic orbitals are there in the d sublevel?
a)
3
b)
4
c)
5
d)
6
27.
How many atomic orbitals are there in the f sublevel?
a)
4
b)
5
c)
6
d)
7
28.

Electrons fill energy levels and sublevels of _____ energy first.

a)

lower

b)

higher

29.

Identify the following element:

1s22s22p63s23p64s23d7

a)

cobalt

b)

copper

c)

zinc

d)

gallium

30.

What do you start an electron configuration with?

a)

1s2

b)

1d10

c)

1f14

d)

1p6

31.
Which of the following is a p block element?
a)
Ca
b)
Ar
c)
Re
d)
Au
32.
How many electrons does potassium K contain? (click to see image)
a)
19
b)
39
c)
20
d)
40
33.
S-Orbitals have a spherical orbit shape.
a)
True
b)
False
34.
Which has the greater EN: 
Cl or Al?
a)
Cl
b)
Al
35.
Which has the greater EN: 
N or C?
a)
C
b)
N
36.
Which has the greater EN: 
H or F?
a)
H
b)
F
37.
Which of the following will have a larger radius than Zinc?
a)
Gallium
b)
Aluminum
c)
Magnesium
d)
Strontium
38.
Which of the following will have a higher electronegativity than arsenic (As)?
a)
Carbon (C)
b)
Neon (Ne)
c)
Antimony (Sb)
d)
Germanium (Ge)
39.
Which of the following will have a lower ionization energy than Scandium (Sc)?
a)
Helium (He)
b)
Titanium (Ti)
c)
Calcium (Ca)
d)
Magnesium (Mg)
40.
As atoms of elements in group 16 are considered in order from top to bottom, the electronegativity of each successive element....
a)
decreases
b)
increases
c)
remains the same
d)
none of the above
41.
Which atom has the largest atomic radius?
a)
potassium
b)
rubidium 
c)
francium
d)
cesium
42.
As you move down the periodic table atoms get bigger.  This is because ____________.
a)
The atoms have more mass.
b)
The atoms have more protons.
c)
The atoms have more energy levels
d)
The atoms have more nuetrons
43.
As you move across the periodic table atoms tend to get smaller because, ______________.
a)
the atoms have more mass.
b)
the atoms have less mass
c)
the atoms have more protons.
d)
the atoms have less electrons.
44.
Atoms that have a high electronegativity, _______________.
a)
give up their electrons more easily.
b)
hold on to their electrons more tightly.
c)
have more electron shells.
45.
Electronegativity is...
a)
how good an atom is at attracting electrons
b)
the ability of an atom to lose electrons
c)
the energy required to remove an electron from a specific atom
d)
how easy it is to make friends. 
46.
Ionization energy is...
a)
the energy required to add an electron to a specific atom
b)
how much energy it takes to remove an electron from an atom
c)
the energy required to shield the outer electrons from the nucleus
d)
a measure of the ability of an atom to attract electrons
47.
The atom with the largest atomic radius in Group 18 is - 
a)
Ar
b)
He
c)
Kr
d)
Rn
48.
Which statement correctly and completely identifies a trend?
a)
Atomic radius decreases across a period and increases down a group.
b)
Electronegativity decreases across a period and decreases down a group.
c)
Ionization energy increases across a period and increases down a group.
d)
Ionic radius increases across a period and increases down a group.
49.
The element with the largest electronegativity in the halogens is - 
a)
At
b)
F
c)
Cl
d)
Br
50.

The element with the lowest electronegativity in Period 3 is -

a)

Na

b)

Cl

c)

Ar

d)

Mg

51.
Which periodic group has the smallest atomic radius?
a)
Alkali metals
b)
Halogens
c)
Noble Gases
d)
Transition metals
52.
Atomic radius generally increases as we move __________.  
a)
down a group and from right to left across a period 
b)
up a group and from left to right across a period 
c)
down a group and from left to right across a period 
d)
up a group and from right to left across a period 
53.
Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.
a)
decreases, increases 
b)
increases, increases
c)
increases, decreases 
d)
stays the same, increases
54.

A measure of the size of an atom, and is generally defined as the distance from the nucleus to the outermost electron orbit

a)

chemical reactivity

b)

atomic radius

c)

energy levels

d)

orbit

55.
The core of an atom where most of the mass of an atom exists; contains protons and neutrons
a)
nucleus
b)
electron shell
c)
proton
d)
electron
56.
The minimum energy required to remove an electron from the ground state of an atom
a)
electron configuration
b)
energy levels
c)
ionization energy
d)
ionic bond
57.
A negatively charged subatomic particle that exists in various energy levels outside the nucleus of an atom
a)
neutron
b)
electron
c)
proton
d)
subatomic particle
58.
The chart scientists use to organize and classify all the known elements
a)
elements chart
b)
the chart
c)
Periodic Table of the Elements
d)
Period table
59.
The tendency of an atom to attract electrons and acquire a negative charge
a)
electronegativity
b)
charge
c)
bonding ability
d)
electron configuration
60.
The energies of electrons as they orbit the nucleus of an atom
a)
energy levels
b)
orbits
c)
shells
d)
electron area
61.
Vertical columns of elements (families) on the periodic table with similar valence electron configurations and similar properties
a)
groups
b)
periods
c)
quadrants
d)
rows
62.
An electron that resides in the outermost shell, or principal quantum level, of an atom
a)
periodic trend
b)
electron shell
c)
ionic radius
d)
valence electron
63.
Put the following elements in order of decreasing ionization energy:
O, Te, Po, S.
a)
O, S, Po, Te
b)
O, S, Te, Po
c)
O, Te, Po, S
d)
O, Po, Te, S
64.
A group of elements that includes the most active of the elements is the -
a)
halogens.
b)
noble gases.
c)
nitrogen group.
d)
alkaline earth metals.
65.
Which is larger:
Ca or Ca+2
a)
Ca
b)
Ca+2
c)
both are same size
66.
Which is larger:
P or P-3
a)
P
b)
P-3
c)
both are same size
67.

As you look from left to right across a period, ionic radius

a)

increases

b)

decreases

68.

As you look down a group, ionic radius

a)

increases

b)

decreases

69.

Which of these has the greatest ionic radius?

a)

potassium

b)

aluminum

c)

carbon

d)

oxygen

70.

Which of these has the larger atomic radius?

a)

B

b)

Al

71.

Which of these has the larger atomic radius?

a)

O

b)

S

72.

Which element has the largest atomic mass?

a)

Li

b)

Ar

c)

Ne

d)

He

73.

Which element has the largest atomic mass?

a)

P

b)

S

c)

Mg

d)

Be

74.

Which element has the largest atomic mass?

a)

I

b)

Ge

c)

Sb

d)

Cl

75.

What element has the greatest atomic radius?

a)

K

b)

Cs

c)

Fr

d)

Rb

76.

What element has the greatest atomic radius?

a)

C

b)

Ba

c)

N

d)

O

77.

What element has the greatest atomic radius?

a)

Te

b)

S

c)

Sn

d)

O

78.

What element has the largest ionization energy?

a)

Ne

b)

Be

c)

O

d)

N

79.

What element has the largest ionization energy?

a)

Ca

b)

Sr

c)

F

d)

N

80.

What element has the largest ionization energy?

a)

He

b)

Ne

c)

Xe

d)

Kr

81.

Which element has the largest electronegativity?

a)

Zr

b)

Zn

c)

Al

d)

Co

82.

Which element has the largest electronegativity?

a)

Ba

b)

Y

c)

Al

d)

Cl

83.

Which element has the largest electronegativity?

a)

Ca

b)

Ne

c)

Br

d)

Ar

84.

Which element has the largest electronegativity?

a)

I

b)

F

c)

Br

d)

Ne

85.

Which element has the smallest atomic mass?

a)

Cd

b)

At

c)

Be

d)

Fr

86.

Which element has the smallest atomic mass?

a)

I

b)

Ca

c)

Cu

d)

O

87.

Which element has the smallest atomic mass?

a)

Li

b)

Co

c)

Te

d)

O

88.

What element has the smallest atomic radius?

a)

Si

b)

F

c)

Ga

d)

O

89.

What element has the smallest atomic radius?

a)

Ne

b)

Rn

c)

Kr

d)

Xe

90.

What element has the smallest atomic radius?

a)

Cu

b)

O

c)

Fr

d)

Xe

91.

What element has the smallest ionization energy?

a)

Ni

b)

Si

c)

Cr

d)

Kr

92.

What element has the smallest ionization energy?

a)

Cl

b)

I

c)

Br

d)

Ar

93.

What element has the smallest ionization energy?

a)

Cu

b)

K

c)

S

d)

Ne

94.

Which element has the smallest electronegativity?

a)

B

b)

In

c)

Ga

d)

Ne

95.

Which element has the smallest electronegativity?

a)

Cl

b)

As

c)

Fr

d)

He

96.

Which element has the smallest electronegativity?

a)

Li

b)

C

c)

B

d)

Rn

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