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CHMB homework Name _________________________ Periodic Table 1. Where are the most active metals? _________________________________ 2. Where are the most active nonmetals? ______________________________ 3. As you go from left to right across a period, the atomic size (increases/decreases). 4. As you travel down a group, the atomic size (decreases/increases). 5. A negative ion is (larger/smaller) that its parent atom and a positive ion is (larger/smaller) than its parent atom. 6. From left to right across a period, the first ionization energy (decreases/increases). 7. As you go down a group, the first ionization energy (decreases/increases). 8. What element has the highest electronegativity? ________ 9. What element has the lowest electronegativity? _________ 10. Elements of group 1 are called _________________________________. 11. Elements of group 2 are called _________________________________. 12. Elements in groups 3-12 are called ______________________________. 13. As you go from left to right across the periodic table, the elements go from (metals/nonmetals) to (metals/nonmetals). 14. Elements in group 17 are called ____________________________ and their anions are called _____________________. 15. The name of the most active element in group 17 is ______, whose atomic symbol is _________. 16. Elements in group 18 are called ____________________. 17. What sublevels are filling with electrons as your cross the nonmetals of the second period? (s, p, d or f) 18. Elements in a group have the same number of ________________. 19. Elements across a period have the same number of ____________________. 20. A colored ion is a (s, p, d, or f) block element. 21. As you go down a group the elements generally become (more / less) metallic. 22. The majority of elements in the periodic table are (metals / nonmetals). 23. Elements in the periodic table are arranged according to their ________________. 24. An element with both metallic and nonmetallic properties is called a __________. © Van Der Sluys, 2004 CHMB homework Answers 1. Lower left 2. Upper right 3. decreases 4. increases 5. larger, smaller 6. increases 7. decreases 8. F 9. Fr 10. alkali metals 11. alkaline earth 12. transition metals 13. metals to nonmetals 14. halogens, halides 15. fluorine, F 16. Noble gases 17. p 18. valence electrons 19. shells 20. d 21. more 22. metals 23. atomic number 24. metalloid © Van Der Sluys, 2004 Name _________________________