Periodic Table

2. An atom with a positive or negative charge, depending on whether they lost of gained electrons
7. An Atom's ability to attract other electrons
9. Most reactive group of elements
10. A mix of nonmetals and metals, or somewhere in the middle of the two
11. Located in the middle of the periodic table and are metallic elements
14. Elements where inner shells are complete, but outer shell is not
19. Elements are in order of increasing atomic number, and in groups with similar properties

1. Located on the right side of the periodic table, not a metal
3. A solid with a high conductivity level
4. Positively charged ion
5. The energy that is required in order to remove an electron from and atom or molecule
6. Published a periodic table and created the periodic law
8. Unreactive elements, with their outer shells full
12. The vertical column in the periodic table, also known as a family
13. A horizontal row of elements on the periodic table
15. Second most reactive group
16. Distance between an atom's nucleus and outermost shell
17. Negativity charged ion
18. Able to form salts, and known to be reactive