Periodic Table and Ionic Compounds

5. Valance electrons are only the electrons found in the ___________ energy shell.
6. Group 1A is also called __________.
10. elements that do not react because their outer electron shell is already filled with 8 electrons are said to have a _______________ electron configuration.
11. Elements in group 6A will bond ionically by creating an ion with a _________ minus charge.
13. Mendeleev’s periodic table of elements contained __________ that were later filled by discovered elements that fit is predictions
14. Elements in group 2A will _________ two electrons when they bond ionically.
15. When an atom loses or gains (an) electron(s) it becomes an ____________
16. When an atom becomes negatively charged by gaining (an) electron(s) it is called an ___________
17. _____________ energy is the energy needed to remove an electron from an atom.
19. The whole number that represents an element on the periodic table is the atomic number and represents the number of ____________.
21. Metals are located on the ______________ side of the periodic table.
24. This person is credited with organizing the modern periodic table.
27. The columns of the periodic table are called ______________.
28. Nonmetals are located on the ___________ side of the periodic table.
29. Ionically bonded elements that create ionic compounds do so by _________ electrons.

1. Elements in the same _________ will contain the same number of energy levels (shells)
2. In addition to organizing the elements in increasing atomic mass, Mendeleev grouped elements with the same ____________ in the same columns.
3. Group 7A is also called _____________.
4. The octet rule states that elements will react to reach an outer shell of ___________ electrons, whether gaining or losing electrons.
6. Group 2A is also called ___________.
7. When an atom becomes positively charged by losing (an) electron(s) it is called a _____________
8. Elements in group 5A will _________ three electrons when they bond ionically.
9. When Mendeleev grouped elements in columns by their properties, how they reacted with oxygen and hydrogen, it turns out that those same elements share the same number of ____________ electrons.
12. A ____________ is a time span or group of things that repeats its pattern, like the elements in the periodic table.
18. the ______________ periodic table are called periods.
20. Group 8A is also called _____________.
22. Elements in group 3A will bond ionically by creating an ion with a _________ plus charge.
23. Dmitri Mendeleev first organized the elements in order of their ____________.
25. Elements that do not react, or rarely react are located in group ___________ A.
26. The decimal number that represents an element on the periodic table is the atomic mass and is a weighted average of all the elements ___________.