SCH 3U
Trends in the Periodic Table
Name: _________________________
Periodic Table Worksheet
1. Where are the most active metals located? ____________Group 1____________
2. Where are the most active non-metals located? _______________Group 17 _______________
3. As you go from left to right across a period, the atomic radius (increases/decreases). Why?
Greater ENC, stronger force of attraction between the nucleus and outmost electrons
4. As you travel down a group, the atomic radius (increases/decreases). Why?
The number of energy levels increases, weaker force of attraction between the nucleus and outmost electrons
5. A negative ion is (larger/smaller) than its parent atom.
6. A positive ion is (larger/smaller) than its parent atom.
7. As you go from left to right across a period, the first ionization energy generally (increases/decreases). Why?
Greater ENC, stronger force of attraction between the nucleus and outmost electrons
8. As you travel down a group, the first ionization energy generally (increases/decreases). Why?
The number of energy levels increases, weaker force of attraction between the nucleus and outmost electrons
9. Where is the highest electronegative ion found? ____Group 17
10. Where is the lowest electronegative ion found? _____Group 1
11. Elements of Group 1 are called _________Alkali ________________________
12. Elements of Group 2 are called ___________Alkaline Earth Metals
13. Elements of Groups 3-12 are called ____________Transition Metals
14. As you go from left to right across the periodic table, the elements go from (metals/non-metals) to
(metals/non-metals).
15. Elements of Groups 17 are called __________________Halogens ___________________________
16. The most active element in Group 17 is _______________ F
___________________________________.
17. Elements of Groups 18 are called ____________________Noble Gases __________________
18. What sublevels are filling across the Transition Metals? _____________d _________________________
19. Elements within a group have a similar number of _______________valence electrons _____________________
20. Elements across a period have the same number of ________________energy levels _____________________
21. A coloured ion generally indicates a___________________ Transition metal ____________
22. As you go down a group, the elements generally become (more/less) metallic.
23. The majority of elements in the periodic table are (metals/non-metals).
24. Elements in the periodic table are arranged according to their ________Atomic Number __________________
25. An element with both metallic and non-metallic properties is called a ___________Metalloids _____