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WorksheetsArrangement of Electrons in Atoms & The Period Law
Total questions: 84
Worksheet time: 42mins
What element in the second period has the largest atomic radius?
Li
Ne
Be
B
Which one of the following groups contains atoms that, in compounds, have the lowest attraction for electrons?
Group 1
Group 17
Group 2
Group 16
Which of the atoms below would have the lowest first ionization energy?
What is the element with the highest electronegativity value?
Cs
H
F
He
Of the following elements, which one has the smallest first ionization energy?
Si
B
Al
C
What is the charge of a cation?
no charge
a positive charge
a negative charge
The charge depends on the size of the nucleus.
Each period in the periodic table corresponds to a(n) ____.
orbital
energy sublevel
principal energy level
suborbital
To what category of elements does an element belong if it is a poor conductor of electricity?
transition elements
nonmetals
metalloids
metals
In which of the following sets are the charges given correctly for all the ions?
N- , O2- , F3-
K+ , Sr2+ , O2-
Na+ , Mg+ , Al+
Rb- , Ba2- , P3+
What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?
3f
4s
3d
2d
Which of the following elements is a transition metal?
copper
tellurium
tin
cesium
What element has the electron configuration 1s2,2s2,2p6,3s2,3p2 ?
Na
Mn
Si
Cu
What is the maximum number of d orbitals in a principal energy level?
1
3
5
7
How many valence electrons are present in silicon?
2
4
5
14
Which of the following elements is in the same period as phosphorus?
oxygen
nitrogen
carbon
magnesium
Which of the following elements has the smallest atomic radius?
selenium
sulfur
chlorine
bromine
In which period is an element that has the electron configuration 1s22s22p63s23p63d104s24p1 when it is in its ground state?
1
2
3
4
Which sublevel has a spherical shaped?
s
p
d
f
Which sublevel has a dumbell shaped?
s
p
d
f
Which sublevel has Double Dumbbells or Dumbbell with a Donut shapes?
s
p
d
f
How many half-filled orbitals are in a bromine atom?
1
4
7
2
Which of the following orbital notations for phosphorus is correct?
The letter "p" in the symbol 4p3 indicates the ____.
orbital shape
principle energy level
spin of an electron
speed of an electron
What is the maximum number of electrons in the second principal energy level?
2
8
18
6
Which of the following categories includes the majority of the elements?
metalloids
metals
nonmetals
liquids
Emission of light from an atom occurs when an electron
jumps from a lower to a higher energy level.
falls into the nucleus.
moves within its atomic orbital.
drops from a higher to a lower energy level.
How many unpaired electrons are in a sulfur atom, which has the atomic number 16?
1
2
3
4
What is the maximum number of electrons in the second principal energy level?
8
6
10
2
The diagram below represents two electrons with
the same energy
the same spin state.
different energies.
opposite spin states.
The chart above shows the relationship between the first ionization energy and the increase in atomic number. The letter on the chart for the Nobel Gas family of elements is
W
Y
Z
X
Given the representation of a chlorine atom, which circle might a chloride ion, Cl-?
Rank Calcium, Selenium, Copper, and Titanium from smallest to largest with respect to radius
Ca, Se, Cu, Ti
Ca, Ti, Cu, Se
Se, Cu, Ti, Ca
Cu, Ti, Ca, Se
Rank Calcium, Selenium, Copper, and Titanium from smallest to largest with respect to electronegativity
Ca, Se, Cu, Ti
Ca, Ti, Cu, Se
Se, Cu, Ti, Ca
Cu, Ti, Ca, Se
When electromagnetic radiation strikes the surface of a metal, electrons are ejected from the metal’s surface. This is a description of the
photoelectric effect.
quantum theory.
Aufbau principle.
effects of diffraction.
The lowest energy state of an atom is its
highest-occupied energy level.
principle quantum number.
electron configuration.
ground state.
What is the highest occupied energy level in an atom of strontium in its ground state?
n = 3
n = 4
n = 5
n = 6
What is the correct electron configuration for a ground-state atom with 7 electrons?
1s22s22p3
1s22s22p23s1
1s22s32p2
1s22s5
What is the correct noble-gas notation for the electron configuration of an atom of chlorine?
[Ar]3s23p5
[Ne]3s23p4
[Ar]3s23p4
[Ne]3s23p5
What is the atomic number of the element with the noble-gas notation [Kr]5s1?
35
36
37
38
The electron configuration below represents a ground-state atom of which element? 1s22s22p63s23p4
S
O
Si
Se
Which of the following types of electromagnetic radiation has the lowest frequency?
X rays
infrared light
ultraviolet light
microwaves
What is the total number of electrons needed to fill the fourth main energy level?
4
8
16
32
An orbital that would never exist in the quantum description of an atom is
3d
8s
6d
3f
Whenever an excited hydrogen atom returns from an excited state to its ground state, it
absorbs a photon of radiation.
emits a photon of radiation.
emits radiation over a range of frequencies.
absorbs specific frequencies of light.
When electrons change energy states, the amount of energy given off or absorbed is equal to
hc
hv
n
cv
Which of the following requires that each of the p orbitals at a particular level have one electron before any of them can have two electrons?
Hund’s rule
Pauli exclusion principle
Aufbau principle
Heisenberg uncertainty principle
An electron occupies the lowest energy orbital that can receive it.
Hund’s rule
Pauli exclusion principle
Aufbau principle
Heisenberg uncertainty principle
All orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron.
Hund’s rule
Pauli exclusion principle
Aufbau principle
Heisenberg uncertainty principle
No two electrons in the same atom can have the same four quantum numbers.
Hund’s rule
Pauli exclusion principle
Aufbau principle
Heisenberg uncertainty principle
Which of the following elements is most similar in behavior to calcium?
Mg
Na
S
Cl
Which of the following elements is most similar in behavior to Oxygen?
Mg
Na
S
Cl
Which periodic group or family of elements is not correctly matched with its common family name?
Group 2: alkaline-earth metals
Group 3: alkali metals
Group 17: halogens
Group 18: noble gases
Which of the following elements has the greatest ionization energy?
Ga
K
Bi
As
Which of the following elements is not a metal?
H
K
Na
Fr
Which ionization energy is generally the largest?
first ionization energy
second ionization energy
third ionization energy
fourth ionization energy
The metalloids are located on the periodic table between
halogens and noble gases.
nonmetals and metals.
alkaline-earth metals and other metals.
alkali metals and transition metals.
lanthanides and actinides
Group 1 elements
elements that make up the f block
elements of the s and p blocks
Group 17 elements
entire set of d-block elements
transition elements
Group 1 elements
elements that make up the f block
elements of the s and p blocks
Group 17 elements
entire set of d-block elements
alkali metals
Group 1 elements
elements that make up the f block
elements of the s and p blocks
Group 17 elements
entire set of d-block elements
halogens
Group 1 elements
elements that make up the f block
elements of the s and p blocks
Group 17 elements
entire set of d-block elements
Visible light, X rays, infrared radiation, and radio waves all have the same
energy
color
velocity
frequency
The speed of an electromagnetic wave is equal to the product of its wavelength and its
energy
color
velocity
frequency
If electromagnetic radiation A has a lower frequency than electromagnetic radiation B, then compared to B the wavelength of A is
longer.
shorter.
equal.
exactly half the length of B's wavelength.
The distance between two successive peaks on a wave is its
frequency
wavelength
quantum number
velocity
A quantum of electromagnetic energy is called a(n)
photon.
excited atom.
electron.
orbital.
A bright-line spectrum of an atom is caused by the energy released when electrons
jump to a higher energy level
fall to a lower energy level
absorb energy and jump to a higher energy level
absorb energy and fall to a lower energy level.
For an electron in an atom to change from the ground state to an excited state,
energy must be released
energy must be absorbed
radiation must be emitted
the electron must make a transition from a higher to a lower energy level.
The set of orbitals that are dumbbell-shaped and directed along the x, y, and z axes are called
d orbitals
p orbitals.
f orbitals.
s orbitals.
The major difference between a 1s orbital and a 2s orbital is
size
shape
the number of electrons it can hold
the orientation in space
The letter designations for the first four sublevels with the number of electrons that can be accommodated in each sublevel are
s:1, p:3, d:10, and f:14.
s:1, p:3, d:5, and f:7.
s:2, p:6, d:10, and f:14.
s:1, p:2, d:3, and f:4.
A single orbital in the 3d level can hold __________ electrons.
10
2
3
6
The atomic sublevel with the next highest energy after 4p is
4d
4f
5p
5s
The electron notation for aluminum (atomic number 13) is
1s22s22p33s23p33d1
1s22s22p63s22d1
1s22s22p63s23p1
1s22s22p9
Which of the following designates the sublevels that exist in energy level 2?
s, p, d, f
s, p, d
s, p
s
Which of the following orbitals is spherical in shape?
3s
2p
5f
4d
In the formula c = λ v, what does "c" represent?
the wavelength of the wave
the frequency of the wave
the energy of the wave
the speed of light
The modern periodic table is arranged in order of increasing:
atomic mass.
atomic radius.
atomic number.
ionization energy.
A row on the periodic table is called a:
period
family
group
distribution
A column on the periodic table is called a:
period
energy level
group
distribution
The amount of energy required to remove an electron from a neutral atom is called:
atomic radius.
ionization energy.
electron affinity.
electronegativity.
Which of the following elements has the largest atomic radius?
B
N
C
O
Which of the following elements has 3 valence electrons?
Na
Mg
Al
Kr
____ is defined as one half the distance between nuclei of two like atoms.
atomic radius.
ionization energy.
electron affinity.
electronegativity.
Which of the following elements form 2+ ions when bonding?
S
Sr
Se
He
