Compounds

3. The halogens have a valance of seven so when they form ions they gain ______ electron.
5. Binary ____________ compounds consist of two bonded non-metals.
8. Negative ion
11. Since they can have more than one oxidation state, ________________ metals use roman numerals when naming to note the charge.
12. The prefix for four.
13. When atoms gain or lose electrons they become _______.
15. Non-metals tend to ___________ electrons to form ions
18. The metal in this compound is called GaN.
19. The alkaline-earth metals have a valence of two, so when the form ions they lose _____ electrons.
20. The compound SO3 is named ___________________.
23. The most electronegative element on the periodic table.
24. An ionic bond involves electrons being ___________.
26. This family has a complete valence shell and, accordingly, rarely bonds.
27. The oxidation state of aluminum is _____________ three.
28. Covalent compounds are named using ____________ to denote the subscripts.

1. This element can have either an oxidation state of +1 or -1.
2. Penta- is the prefix for _______.
4. When writing the formulas for ionic compounds _____________________ the oxidation state charge numbers.
6. Binary ____________ compounds consist of a metal bonded to a non-metals.
7. The compound Mg3P2 is named ________________.
9. Atoms gain, lose or share electrons when bonding to cause them to have a complete _____________.
10. Positive ion
14. Non-metals are elements on the ______ side of the periodic table and hydrogen.
16. The compound FeO is named ___________________.
17. A covalent bond involves electrons being ___________.
21. Metals tend to _____________ electrons to form ions.
22. In rubidium nitride, the subscript for Rb is ________.
25. The oxidation state of sulfur is ______________ two.