The Periodic Table

2. vertical rows in the periodic table
3. halogens have low melting and boiling points that has an _________ trend down the group
8. down the group, melting point of alkali metals decreases while density increases due to the increase in ______ ______
11. group number represents number of _______ _________
13. Group 1 elements
18. period number represents number of ________ ______
19. Group 17 elements
21. horizontal rows in the periodic table
23. transition metals form ________ compounds
25. a more reactive halogen is able to ________ a less reactive halogen from an aqueous solution of its ions
26. noble gases have a _____ ______ valence shell

1. elements found between Group 2 and 13 in the periodic table
4. the type of element that forms cations by losing valence electron(s)
5. halogens usually exist as ________ molecules
6. down the group, __________ of alkali metals increases due to the increase in electron shells; valence electron is further away from the nucleus and is thus lost more easily
7. Group 18 elements
9. down the group, reactivity of halogens _________ due to the increase in electron shells; valence shell is further away from the nucleus hence it is more difficult to attract an electron
10. alkali metals have ___ melting point and density (Li, Na, and K can float on water)
12. alkali metals react with water to give ________ solutions
14. transition metals exhibit ________ oxidation states
15. noble gases exist as _________ particles (single atoms)
16. transition metals are frequently used as ________, e.g. iron is used in the Haber process to produce ammonia
17. the type of elements that forms anions by gaining electron(s)
20. transition metals have high melting point due to the strong ________ _____
22. transition metals have high _______ due to the large atomic mass and small atomic radius
24. noble gases are __________ and inert since they have a stable electronic configuration