Column A
1. Element located in Group 2A Period 5.
2. Element located in Group 8A Period 2.
3. Element located in Group 4A Period 6.
4. Element located in Group 6A Period 3.
Column B
a.Sr - Strontium
b.S- Sulfur
c.Ne- Neon
d.Pb- lead
Column A Column B
1. Element located in Group 2A Period 5. a. Sr - Strontium
2. Element located in Group 8A Period 2. c. Ne - Neon
3. Element located in Group 4A Period 6. d. Pb - Lead
4. Element located in Group 6A Period 3. b. S - Sulfur