WorksheetsPeriodic trends review
Total questions: 20
Worksheet time: 46mins
As you move down a group, the atomic radius increases because -
you add more and more neutrons
you add more and more protons
you add more and more shells (energy levels)
you add more atomic mass
The atom with the largest atomic radius in Group 18 (the noble gases) is ___.
Ar
He
Kr
Rn
As you move across the periodic table from left to right, the atomic radius decreases. This is because -
the number of protons increases, so attraction to electrons increases
the number of energy levels increases
the number of electrons increases
the atomic mass increases
Which atom has the largest atomic radius in Period 4 (row 4)?
K
Kr
Fe
Fe
Francium (Fr) has the lowest ionization energy in Group 1 because -
It has the smallest number of valence electrons
It has the greatest atomic mass
It has the greatest number of protons, so it attracts its electrons the strongest
Its one valence electron is very far from the nucleus, so little energy is needed to remove it
All groups/families have similar
Names
Atomic numbers
Atomic masses
Properties
The atom with the largest atomic radius in Period 4 (row 4) is -
K
Kr
Fe
Arrange the following in order of increasing ionization energy: Strontium, Aluminum, Indium.
Strontium, Indium, Aluminum
Strontium, Aluminum, Indium
Indium, Aluminum, Strontium
Aluminum, Indium, Strontium
Which element has greater ionization energy?
Magnesium
Phosphorus
Arrange these in increasing order of atomic radii: F, N, B
B < N < F
B < F < N
N < F < B
F < N < B
Which of the following elements has the smallest atomic radius: Li, O, C, or F?
Li
O
C
F
Which of the elements Ca, Be, Ba, and Sr has the largest atomic radius?
Be
Ba
Ca
Sr
As you move from left to right across a period, does the electron affinity increase or decrease?
Increases
Decreases
As you move down a group, does the electron affinity increase or decrease?
Increases
Decreases
Which of these has a greater need for electrons?
chlorine (Cl)
Francium (Fr)
Which of these has a greater need for electrons (electron affinity)?
Fluorine (F)
Lithium (Li)
Define electron affinity.
The energy required to add an electron to an atom.
The energy required to remove an electron from an atom.
Elements on the right side of the periodic table tend to have a higher electron affinity than elements on the left side of the periodic table.
True
False
