Periodic Table Crossword

2. A nonmetal found on the periodic table
4. A lanthanide found on the periodic table
7. The tendency of an atom to form chemical bonds with other atoms
8. A noble gas found on the periodic table
10. Organized the periodic table by increasing atomic number
11. An alkali metal found on the periodic table
14. Have higher melting points and densities than alkali metals
18. Are a series of reactive rare earth metals with similar properties
20. A metalloid found on the periodic table
22. Are very reactive nonmetals with seven valence electrons
23. A transition metal found on the periodic table
25. Elements in Group 1 are highly ____ because they have only one valence electron
26. Are very stable and unreactive due to a full outer electron shell
27. Developed the first periodic table but did not get credit for incompleteness
29. Are silvery metals with one valence electron
31. Poor conductors of heat and electricity

1. An alkaline earth metal found on the periodic table
3. A metal found on the periodic table
5. Organized the periodic table by increasing atomic mass
6. Are all radioactive, and only three are found in nature
9. A halogen found on the periodic table
12. Good conductors of heat and electricity
13. Intermediate conductors of heat and electricity
15. An actinide found on the periodic table
16. Process of removing electrons from an atom to form ions
17. Are lustrous metals with high melting points and multiple oxidation states
19. Number of valence electrons in a Group 18 noble gas
21. Elements that form negative ions tend to be classified as ____
24. Type of bond formed by the transfer of valence electrons between a metal and a nonmetal
28. Electrons in the outermost shell of an atom
30. An atom or molecule that has a net electrical charge from gaining or losing electrons