Section 8.1
Main Group Elements
Practice Test
1.
The elements in Groups 1, 2, and 13-17 are called the _____________.
a.
alkali metals
b.
main group elements
c.
noble gases
d.
transition elements
Hint
2.
_______________ is a measure of the size of an atom.
a.
Atomic radius
b.
Nuclear charge
c.
Number of electrons
d.
Oxidation number
Hint
3.
In general, atomic size ___________ from left to right across a period.
a.
decreases
b.
remains the same
c.
increases
d.
increases, then decreases
Hint
4.
In general, atomic size ___________ from top to bottom within a Group.
a.
decreases
b.
increases
c.
increases, then decreases
d.
remains the same
Hint
5.
Among the elements fluorine, lithium, cesium, and astatine, which would you expect to have the smallest atomic radius?
a.
astatine
b.
cesium
c.
fluorine
d.
lithium
Hint
6.
Among the ions F
-
, Li
+
, Cs
+
, and At
-
, which would you expect to have the smallest ionic radius?
a.
Li
+
b.
Cs
+
c.
F
-
d.
At
-
Hint
7.
These elements are soft, silvery metals and good conductors of heat and electricity.
a.
alkali metals
b.
transition elements
c.
metalloids
d.
halogens
Hint
8.
Which elements would you expect to be the most reactive alkaline earth metal?
a.
beryllium
b.
francium
c.
lithium
d.
radium
Hint
9.
This alkali-metal compound is used in drain cleaners and in the digestion of wood pulp.
a.
sodium hydroxide
b.
sodium carbonate
c.
sodium chloride
d.
sodium nitrate
Hint
10.
To prevent unintended reactions, sodium and potassium are kept in _____________.
a.
air
b.
ice
c.
oil
d.
water
Hint
11.
Metallic sodium is obtained from NaCl through _________.
a.
condensation
b.
electrolysis
c.
freezing
d.
thermal decomposition
Hint
12.
This Group 13 metal is obtained from its ore in a process that consumes about 5% of the electricity produced in the U.S.
a.
aluminum
b.
gallium
c.
indium
d.
thallium
Hint
13.
A radioactive isotope of this alkaline-earth metal with a mass number of 90 can replace calcium in the hydroxyapatite of bones.
a.
barium
b.
beryllium
c.
magnesium
d.
strontium
Hint
14.
These groups contain metals, nonmetals, and metalloids.
a.
14 , 15
b.
13-18
c.
1, 2
d.
17, 18
Hint
15.
This Group 14 element is used in making ceramics, glass, and cement.
a.
carbon
b.
lead
c.
silicon
d.
tin
Hint
16.
Ozone is an allotrope of this element.
a.
oxygen
b.
lead
c.
osmium
d.
neon
Hint
17.
This halogen is absorbed readily by the thyroid gland.
a.
bromine
b.
chlorine
c.
fluorine
d.
iodine
Hint
18.
Many towns and cities add these compounds to their water supplies.
a.
carbides
b.
fluorides
c.
hydrides
d.
sulfides
Hint
19.
This noble gas is used to carry scientific instruments into the upper atmosphere.
a.
argon
b.
helium
c.
krypton
d.
xenon
Hint
20.
This nonmetal is used to increase the hardness of steel.
a.
carbon
b.
nitrogen
c.
oxygen
d.
chlorine
Hint
21.
Atoms that transfer electrons form __________ bonds.
a.
ionic
b.
covalent
c.
dative
d.
coordinate
Hint
