Name: ______________________________
Date: ________________________
Period: ______
Homework: Periodic Trends
1. Match the Periodic Trend below with its correct definition.
_____ Electronegativity
a. The energy required to remove one electron from an atom
_____ Atomic Radius
b. The tendency of an atom to attract electrons in a covalent bond
_____ Ionization Energy
c. The distance from the nucleus to the outermost electron
2. When metals become ions, do they get smaller or larger? _____________________________
3. When nonmetals become ions, do they get smaller or larger? _________________________
REMEMBERING YOUR “ANCHORS”
4. What element has the greatest electronegativity? ___________________________________
5. What element has the greatest atomic radius? ______________________________________
6. What element has the greatest ionization energy? ___________________________________
Circle your responses to questions 7-12.
7. Atomic radius decreases as you travel (up, down) and to the (left, right).
8. Atomic radius increases as you travel (up, down) and to the (left, right).
9. Electronegativity decreases as you travel (up, down) and to the (left, right).
10. Electronegativity increases as you travel (up, down) and to the (left, right).
11. Ionization energy decreases as you travel (up, down) and to the (left, right).
12. Ionization energy increases as you travel (up, down) and to the (left, right).
The arrows in the diagrams below point in the direction of increasing magnitude.
A
B
C
D
13. Which diagram accurately depicts the trend of electronegativity? ________
14. Which diagram accurately depicts the trend of atomic number? ________
15. Which diagram accurately depicts the trend of ionization energy? ________
16. Which diagram accurately depicts the trend of atomic radius? ________
1. Which of the following elements would increase in size when it became an ion?
A Tin
B Indium
C Sulfur
D Potassium
2. Which of these elements has the lowest atomic radius?
F Strontium
G Iodine
H Francium
J Neon
3. Which of the following elements requires the greatest amount of energy to remove one
electron from its outer energy level?
A Magnesium
B Carbon
C Aluminum
D Nitrogen
4. Which of the following elements has the greatest electronegativity?
F Phosphorous
G Selenium
H Astatine
J Sulfur
5. Which of these elements has the lowest electronegativity?
A Sodium (Na)
B Boron (B)
C Nitrogen (N)
D Magnesium (Mg)
6. Which of these elements has the greatest atomic radius?
F Sulfur (S)
G Barium (Ba)
H Zirconium (Zr)
J Chlorine (Cl)
7. Which of these elements has the lowest ionization energy?
A Strontium (Sr)
B Oxygen (O)
C Argon (Ar)
D Yttrium (Y)
8. Which of the following properties does not increase from left to right across a period?
F Ionization energy G Electronegativity H Atomic radius _
J Atomic number
9. Which of the following elements has the smallest atomic radius?
A Strontium
B Barium
C Oxygen
D Fluorine
10. Which of these elements has the greatest electronegativity?
F Phosphorous
G Iodine
H Francium
J Sulfur
11. Which of these elements has the greatest ionization energy?
A Gallium
B Carbon
C Aluminum
D Boron
12. Which of the following elements has the greatest electronegativity?
F Arsenic
G Selenium
H Tellurium
J Antimony
13. Which of the following elements has the largest atomic radius?
A Zinc
B Rubidium
C Chlorine
D Germanium
14. Which of the following elements would decrease in size when it became an ion?
F Boron
G Carbon
H Silicon
J Aluminum
15. Which of the following elements has the greatest atomic radius?
A Chromium
B Titanium
C Yttrium
D Niobium
16. Which of these elements has the lowest electronegativity?
F Osmium (Os)
G Lead (Pb)
H Zinc (Zn)
J Copper (Cu)
17. Which of the following elements has the greatest ionization energy?
A Chlorine
B Neon
C Arsenic
D Sulfur