WorksheetsChapter 5 Quiz
Total questions: 24
Worksheet time: 12mins
In a row in the periodic table, as the atomic number increases, the atomic radius generally
Increases
Decreases
Remains constant
Becomes immeasurable
A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound is called
electron configuration
electron affinity
ionized potential
electronegativity
In nature, the alkali metals occur as
gases
elements
complex ions
compounds
The number of valence electrons in Group 17 elements is
17
7
8
equal to the period number
Across a period in the periodic table, ionic radii
gradually increase, then sharply decrease
gradually decrease, then sharply increase
gradually increase
gradually decrease
Hydrogen is placed separately from other elements in the periodic table because it
has many unique properties
does not exist as a free element in nature
is a gas
has atomic number one
Mendeleev left spaces in his periodic table and predicted the existence of three elements and their
colors
radioactivity
properties
atomic numbers
Strontium's highest occupied energy level is 5s2. To what group does strontium belong?
group 5
group 2
group 6
group 8
Identify the sublevels in a period that contains 32 elements.
s, p
s, f
s, p, d, f
s, p, d
In Group 2 elements, the valence electrons are in sublevel
s
d
p
f
The discovery of what elements added a new column to Mendeleev's periodic table?
radioactive elements
transition elements
noble gas
metalloids
The principle that states that the physical and chemical properties of the elements are periodic functions of their atomic numbers is
the law of properties
the periodic table
the periodic law
Mendeleev's law
A positive ion is known as a(n)
cation
valence electron
anion
ionic radius
What are the elements with atomic numbers from 58 to 71 called?
the lanthanides
the noble gases
the alkali metals
the actinides
When an electron is added to a neutral atom, a certain amount of energy is
always released
always absorbed
either released or absorbed
transferred to the more electronegative element
The ionization energies for removing successive electrons from sodium are 496 kJ/mol, 4562 kJ/mol, 6912 kJ/mol, and 9544 kJ/mol. The great jump in ionization energy after the first electron is removed indicates that
the noble gas configuration has been reached
sodium has four or five electrons
the atomic radius has increased
a (d) electron has been removed
Across a period, ionization energies of d-block elements generally
remain constant
decrease
increase
drop to zero
Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing
density
atomic mass
reactivity
atomic number
The most characteristic property of the noble gases is that they
are radioactive
have low boiling points
are gases at ordinary temperatures
are largely unreactive
The atomic number of lithium, the first element in Group 1, is 3. The atomic number of the second element in this group is
18
4
11
10
Argon, krypton, and xenon are
noble gases
lanthanides
alkaline earth metals
actinides
When determining the size of an atom by measuring the distance between bonded, identical, adjacent nuclei, the radius of an atom is
one-half the distance between nuclei
equal to the distance between nuclei
one-fourth the distance between nuclei
twice the distance between nuclei
The energy required to remove an electron from an atom is the atom's
electronegativity
electron energy
ionization energy
electron affinity
Which is the best reason that the atomic radius generally increases with atomic number in each group of elements?
the nuclear charge increases
the number of occupied energy levels increases
a new octet forms
the number of neutrons increases
