Name: ______________________________________ Prd: ____ Score: ______
Atomic Size and Attraction
Below is a diagram of a lithium atom. To simplify the diagram, all the electrons
in a particular energy level have been placed on ring, ignoring the shape of the p
sublevels. Use the diagram of lithium to draw atomic diagrams of carbon,
fluorine, potassium and francium.
lithium
carbon
fluorine
+3
potassium
1.
Describe the pattern in the number of
protons making up the nucleus of the atom as you
move down the periodic table.
francium
a. How does increasing the number of protons
affect the strength of attraction between the
nucleus and electrons?
2.
As you move down the periodic table,
describe the pattern in the number of energy levels
in the electron cloud.
a. How does this affect the distacne between the nucleus and the electron
cloud?
3. Considering the strength of attraction between the nucleus and the valence
electrons of lithium and francium, ________________ has a greater
attraction. Explain why francium has a weaker attraction eventhough it has
many more protons than lithium.
Name: ______________________________________ Prd: ____ Score: ______
Atomic Size and Attraction
Below is a diagram of a lithium atom. To simplify the diagram, all the electrons
in a particular energy level have been placed on ring, ignoring the shape of the p
sublevels. Use the diagram of lithium to draw atomic diagrams of carbon,
fluorine, potassium and francium.
lithium
carbon
fluorine
+3
potassium
1.
Describe the pattern in the number of
protons making up the nucleus of the atom as you
move down the periodic table.
francium
a. How does increasing the number of protons
affect the strength of attraction between the
nucleus and electrons?
2.
As you move down the periodic table,
describe the pattern in the number of energy levels
in the electron cloud.
a. How does this affect the distacne between the nucleus and the electron
cloud?
3. Considering the strength of attraction between the nucleus and the valence
electrons of lithium and francium, ________________ has a greater
attraction. Explain why francium has a weaker attraction eventhough it has
many more protons than lithium.
4. Describe the pattern in the number of protons as you move from left to
right across the periodic table.
a. How does this affect the strength of attraction between the nucleus and
the valence electrons?
5. Describe the pattern in the number of energy levels in the electron cloud as
you move from left to right across the periodic table.
a. How does the this affect the attraction between the nucleus and the
valence electrons?
6. For each set of elements below, circle the element that has a greater force
of attraction between it’s nucleus and valence electrons.
a. magneisum & strontium
d. iodine & rubidium
b. fluorine & phosphorous
e. sulfur & chlorine
c. indium & aluminum
f.
phosphoirous & nitrogen
7. Explain how you made your selections above.
8. For each set of elements below, circle the element that has the largest
atomic radius.
a. magneisum & strontium
d. boron & aluminum
b. fluorine & phosphorous
e. bromine & arsenic
c. indium & aluminum
f.
chlorine & lead
9. Explain how you made your selections above.
10. Describe the pattern between atomic size and the strength of attraction
between the nucleus and valence electrons. Explain why there is a pattern?
4. Describe the pattern in the number of protons as you move from left to
right across the periodic table.
a. How does this affect the strength of attraction between the nucleus and
the valence electrons?
5. Describe the pattern in the number of energy levels in the electron cloud as
you move from left to right across the periodic table.
a. How does the this affect the attraction between the nucleus and the
valence electrons?
6. For each set of elements below, circle the element that has a greater force
of attraction between it’s nucleus and valence electrons.
a. magneisum & strontium
d. iodine & rubidium
b. fluorine & phosphorous
e. sulfur & chlorine
c. indium & aluminum
f.
phosphoirous & nitrogen
7. Explain how you made your selections above.
8. For each set of elements below, circle the element that has the largest
atomic radius.
a. magneisum & strontium
d. boron & aluminum
b. fluorine & phosphorous
e. bromine & arsenic
c. indium & aluminum
f.
chlorine & lead
9. Explain how you made your selections above.
10. Describe the pattern between atomic size and the strength of attraction
between the nucleus and valence electrons. Explain why there is a pattern?