Chapter 5
 

Chap 5 MC practice pretest

 

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

 

____      1.     A horizontal row of blocks in the periodic table is called a(n)

a.

group.

c.

family.

b.

period.

d.

octet.

 

 

____      2.     Titanium, atomic number 22, has the configuration [Ar] 3d2 4s2. To what group does titanium belong?

a.

Group 2

c.

Group 4

b.

Group 3

d.

Group 5

 

 

 

____      3.     Refer to the figure above. To which group do fluorine and chlorine belong?

a.

alkaline-earth metals

c.

halogens

b.

transition elements

d.

actinides

 

 

____      4.     To which group do lithium and potassium belong? Refer to the figure above.

a.

alkali metals

c.

halogens

b.

transition metals

d.

noble gases

 

 

____      5.     The person whose work led to a periodic table based on increasing atomic number was

a.

Moseley.

c.

Rutherford.

b.

Mendeleev.

d.

Cannizzaro.

 

 

____      6.     In Period 3 there are 8 elements. What sublevel(s) is (are) being filled?

a.

s

c.

s and p

b.

s and d

d.

d and f

 

 

____      7.     Mendeleev left spaces in his periodic table and predicted several elements and their

a.

atomic numbers.

c.

properties.

b.

colors.

d.

radioactivity.

 

 

____      8.     The group of 14 elements in the sixth period that have occupied 4f orbitals is the

a.

actinides.

c.

transition elements.

b.

lanthanides.

d.

metalloids.

 

 

____      9.     Within a group of elements, as the atomic number increases, the atomic radius

a.

increases.

c.

decreases regularly.

b.

remains approximately constant.

d.

decreases, but not regularly.

 

 

____     10.     The electrons available to be lost, gained, or shared when atoms form molecules are called

a.

ions.

c.

d electrons.

b.

valence electrons.

d.

electron clouds.

 

 

____     11.     In nature, the alkali metals occur as

a.

elements.

c.

complex ions.

b.

compounds.

d.

gases.

 

 

____     12.     Evidence gathered since Mendeleev's time indicates that a better arrangement than atomic mass for elements in the periodic table is an arrangement by

a.

mass number.

c.

group number.

b.

atomic number.

d.

series number.

 

 

____     13.     Argon, krypton, and xenon are

a.

alkaline earth metals.

c.

actinides.

b.

noble gases.

d.

lanthanides.

 

 

____     14.     A positive ion is known as a(n)

a.

ionic radius.

c.

cation.

b.

valence electron.

d.

anion

 

 

____     15.     Atomic size is determined by measuring the

a.

radius of an individual atom.

b.

distance between nuclei of adjacent atoms.

c.

diameter of an individual atom.

d.

volume of the electron cloud of adjacent atoms.

 

 

____     16.     Mendeleev's table was called periodic because the properties of the elements

a.

showed no pattern.

b.

occurred at repeated intervals called periods.

c.

occurred at regular time intervals called periods.

d.

were identical.

 

 

____     17.     The periodic law states that the properties of elements are periodic functions of their atomic numbers. This means that the ____ determines the position of each element in the periodic table.

a.

mass number

c.

number of protons

b.

number of neutrons

d.

number of nucleons

 

 

____     18.     The electron configurations of the noble gases from neon to radon in the periodic table end with filled

a.

f orbitals.

c.

s orbitals.

b.

d orbitals.

d.

p orbitals.

 

 

____     19.     The most reactive group of the nonmetals are the

a.

lanthanides.

c.

halogens.

b.

transition elements.

d.

rare-earth elements.

 

 

____     20.     The atomic number of lithium, the first element in Group 1, is 3. The atomic number of the second element in this group is

a.

4.

c.

11.

b.

10.

d.

18.

 

 

____     21.     Which is the best reason that the atomic radius generally increases with atomic number in each group of elements?

a.

The nuclear charge increases.

c.

The number of energy levels increases.

b.

The number of neutrons increases.

d.

A new octet forms.

 

 

____     22.     In a row in the periodic table, as the atomic number increases, the atomic radius generally

a.

decreases.

c.

increases.

b.

remains constant.

d.

becomes unmeasurable.

 

 

____     23.     In Group 2 elements, the valence electrons are in sublevel

a.

d.

c.

s.

b.

p.

d.

f.

 



 

 

 
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