Periodic Trends

Chemist Period Date

GPS 5 Periodic Trends CH-2f

1. Circle the atom in each pair that has the largest atomic radius.

a) Al B b) S O c) Br Cl d) Na Al e) O F f) Mg Ca

2. Put the following elements in order from smallest to largest atomic radius and explain why:

C, O, Sn, Sr.

3. Define electronegativity.

4. How does the ionic radius of a nonmetal compare with its atomic radius?

5. Circle the atom in each pair that has the greater electronegativity.

a) Ca Ga b) Li O c) Cl S d) Br As e) Ba Sr f) O S

6. Based on the concept of periodic trends, answer the following questions for these atoms: Li, Be, Mg, Na. Be able to defend your answers.

a. Which element has the lowest electronegativity? _________________________________

b. Which element has the least metallic character? _________________________________

c. Which element is the largest atom? ___________________________________________

7. Based on the concept of periodic trends, answer the following questions for these atoms: P, S, Cl, F.

Be prepared to defend your answers.

d. Which element has the highest electronegativity? ________________________________

e. Which element has the least metallic character? _________________________________

f. Which element has the largest ion? ___________________________________________

8. Based on the concept of periodic trends, answer the following questions for these atoms: Au, Zn, S, Si. Be able to defend your answers.

a. Which element has the highest electronegativity? ________________________________

b. Which element has the most metallic character? _________________________________

c. Which element has the largest atom? _________________________________________

Instructions Fill in the arrows below with the following terms: increasing...