Periodic Table Worksheet Answers 1. Where are the most active metals located?: lower left 2. Where are the most active nonmetals located?: upper right 3. As you go from left to right across a period, the atomic size (decrease / increase) Why: decreases nuclear charge 4. As you travel down a group, the atomic size (decrease/increase) why: increase energy 5. A negative ion is (larger/smaller) than its parent atom: larger 6. A positive ion is (larger/smaller) than its parent atom: smaller 7. As you go from left to right across a period, the first ionization energy generally (decreases/increase) Why: increase positive charge 8. As you go down a group, the first ionization energy generally ( decreases/increases): decreases 9. Where is the highest electron negativity found?: upper right 10. Where is the lowest electron negativity found?: lower left 11. Elements of Group 1 are called: Alkali 12. Elements of Group 2 are called: Alkaline 13. Elements of Group 3-12 are called: Transition 14. As you go from left to right across the periodic table, the elements go from (metals/nonmetal) to (metals/nonmetals).: metals nonmetals 15. Group 17 elements are called: Halogens 16. The most active element in Group 17 is: Fluorine 17. Group 18 elements are called: noble gases 18. What sub levels are filling across the Transition Elements: D and F 19. Elements within a group have a similar number of: Valence electrons 20. Elements across a series have the same number of: Principal Energy Level 21. A colored ion generally indicates a: group 22. As you go down a group, the elements generally become (more/less) metallic: more 23. The majority of elements in the periodic table are (metals/nonmetals): metals 24. Elements in the periodic table are arranged according to their: atom number 25. An element with both metallic and nonmetallic properties is called a: metalloids 1/1