Periodic Table

3. name for group 2 elements.
4. element 30 on the periodic table
9. there are 118 elements in this class.
10. groups 3-12 on the periodic table.
13. element 26 on the periodic table.
14. element 53 on the periodic table.
17. there are only seven elements in this class.
18. reorganized the periodic table by atomic number
20. He grouped elements with similar properties into groups of three called triads.
22. the amount of energy needed to remove an electron from the outermost energy level of an atom.
24. the only metal which is liquid at room temperature.
25. metallic property meaning it can be pounded into thin sheets.
26. name for group 17 elements

1. name for group 1 elements.
2. the only metal not grayish in color.
5. element class which does not conduct heat & electricity.
6. element 32 on the periodic table
7. element with the highest electronegativity.
8. When an atom gains or loses an electron it becomes a charged particle called____.
11. element which is a commonly used in electronics.
12. element 83 on the periodic table.
15. an atom’s ability to attract an electron from another atom when forming a compound.
16. name for group 18 elements
17. Russian chemist who created the first periodic table
19. half the distance between two nuclei of adjacent atoms of an element.
21. Only nonmetal which is liquid at room temperature.
23. element 31 on the periodic table