Periodic Trends - Atomic Radius And Ionic Radius Worksheet With Answers Page 5
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57. List the atomic numbers of the largest atom of each section of the graph. In what group on the periodic table are each of
these elements located?
3, 11, 19, 37; located in group 1 (alkali metals) on the periodic table
8. List the atomic numbers of the smallest atom of each section of the graph. In what group on the periodic table are each
of these elements located?
3, 11, 19, 37; located in group 1 (alkali metals) on the periodic table
On the ionization energy versus atomic number graph, do the following:
a. Label the points on the graph that represent an element with a valence configuration of
ns
1
(1 valence e
-
).
b.Label the points on the graph that represent an element with a valence configuration of
ns
2
np
6
(8 valence e
-
)
sublevel.
c. Circle the points on the graph that represent the
3d
sublevel and the
4d
d. Draw a
vertical line
through the points on the graph that represent a filled valence shell.
2
nd
period
3
rd
period
4
th
period
5
th
period
He
Ne
Ar
Kr
Xe
H
Li
Na
K
Rb
questions:
1. Define ionization energy.
the energy needed to remove an electron from an atom to form a +1 ion
2. Each section of the graph represents a
period
or horizontal row on the periodic table.
3. State the general trend in ionization energy moving across a period.
ionization energy increases across a period from left to right
4. List the atomic number of the elements that have the lowest ionization energy in each section of the graph.
3, 11, 19, 37
5. To what group of the periodic table do these elements belong?
the alkali metals
6. List the atomic number of the elements that have the highest ionization energy in each section of the graph.
2, 10, 18, 36, 54
7. To what group of the periodic table do these elements belong?
the noble gases
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