Chapter 6:
The Periodic Table and Periodic Law
Practice Test
1.
Which of the following is an ion?
a.
lithium-3
b.
C
c.
O
2-
d.
HCl
Hint
2.
When most atoms form ions, how many electrons do they have in the valence levels?
a.
two
b.
eight
c.
one
d.
seven
Hint
3.
Columns on the periodic table are known as __________.
a.
groups
b.
metalloids
c.
nonmetals
d.
periods
Hint
4.
In general, when comparing ions to their atoms, what trend is observed?
a.
Positive ions are smaller and negative ions are larger than their corresponding atoms.
b.
Positive ions are smaller and negative ions are smaller than their corresponding atoms.
c.
Positive ions are larger and negative ions are smaller than their corresponding atoms.
d.
Positive ions are larger and negative ions are larger than their corresponding atoms.
Hint
5.
The ionic compound, sodium chloride, is formed from atoms of the elements sodium and chlorine. What happens to the size of each atom when it forms an ion?
a.
Sodium decreases in size and chlorine decreases in size.
b.
Sodium increases in size and chlorine decreases in size.
c.
Sodium decreases in size and chlorine increases in size.
d.
Sodium increases in size and chlorine increases in size.
Hint
6.
The atomic radius generally _______________ on the periodic table.
a.
increases bottom to top and from right to left
b.
increases from top to bottom and from left to right
c.
increases from top to bottom and from right to left
d.
increases from bottom to top and from left to right
Hint
7.
Atoms that lose electrons to form positive ions are __________.
a.
noble gases
b.
nonmetals
c.
metals
d.
metalloids
Hint
8.
How would you classify an element that has an electron configuration of [Kr]5s
2
4d
10
5p
5
?
a.
a representative element
b.
a noble gas
c.
an alkali metal
d.
a transition metal
Hint
9.
Which of the following have the same number of electrons?
Cl
-
, O
2-
, F, Ca
2+
, Fe
3+
a.
O
2-
and F
b.
F and Cl
-
c.
Ca
2+
and Fe
3+
d.
Ca
2+
and Cl
-
Hint
10.
Which of the blocks on the periodic table contains the most elements?
a.
p block
b.
s block
c.
f block
d.
d block
Hint
11.
Elements in the d block are also known as _______________.
a.
lanthanide metals
b.
transition metals
c.
alkaline earth metals
d.
alkali metals
Hint
12.
Atoms of elements in group 1A have ____________.
a.
seven electrons in their outermost energy level
b.
one electron in their outermost energy level
c.
two electrons in their outermost energy level
d.
eight electrons in their outermost energy level
Hint
13.
Which group on the periodic table is known as the halogens?
a.
group 1A
b.
group 8A
c.
group 7A
d.
group 2A
Hint
14.
Which group on the periodic table is known as the alkaline earth metals?
a.
group 2A
b.
group 8A
c.
group 7A
d.
group 1A
Hint
15.
Which of the following is the general valence electron configuration for the alkaline earth elements?
a.
ns
2
np
2
b.
ns
1
c.
ns
2
d.
ns
2
np
1
Hint
16.
Which of the following elements is a metalloid?
a.
W
b.
As
c.
Na
d.
F
Hint
17.
Which of the following elements is most likely to form a negatively-charged ion?
a.
F
b.
Br
c.
Cl
d.
I
Hint
18.
How many protons and electrons are present in Al
3+
?
a.
13 protons, 10 electrons
b.
13 protons, 13 electrons
c.
10 protons, 10 electrons
d.
10 protons, 13 electrons
Hint
19.
Which element has the lowest first ionization energy?
a.
Na
b.
Cs
c.
K
d.
Li
Hint
20.
Halogens are good disinfectants. Which of the following is a halogen?
a.
Cl
b.
Fe
c.
O
d.
N
Hint
