Periodic Trends Worksheet Name: ______________________________ Use your notes and periodic table to complete this worksheet. 1. Define the following: a. Atomic radius...

Periodic Trends Worksheet Name: ______________________________ Use your notes and periodic table to complete this worksheet. 1. Define the following: a. Atomic radius ______________________________________________________ __________________________________________________________________ b. Ionization energy____________________________________________________ __________________________________________________________________ c. Electronegativity ____________________________________________________ __________________________________________________________________ 2. Describe the periodic trend for atomic radius across a period and down a group: ______ ________________________________________________________________________ 3. Describe the periodic trend for ionization energy across a period and down a group: ___ ________________________________________________________________________ 4. Describe the periodic trend for electronegativity across a period and down a group: ___ ________________________________________________________________________ 5. Rank the following elements by increasing atomic radius: carbon, aluminum, oxygen, potassium. ______________________________________________________________ _______________________________________________________________________ 6. Rank the following elements by increasing electronegativity: sulfur, oxygen, neon, aluminum. ______________________________________________________________ _______________________________________________________________________ 7. Why does fluorine have a higher ionization energy than iodine? ___________________ _______________________________________________________________________ 8. Circle the atom in each pair that has the largest radius. a. Al or B d. O or F b. Na or Al e. Br or Cl c. S or O f. Mg or Ca 9. Circle the atom in each pair that has the greater ionization energy. a. Li or Be d. P or Ar b. Ca or Ba e. Cl or Si c. Na or K f. Li or K 10.Circle the atom in each pair that has the greater electronegativity. a. Ca or Ga d. Ba or Sr b. Br or As e. Cl or S c. Li or O f. O or S