3.1 Combining Capacities & Naming Compounds Flashcards
Group 1 metals’ CC
+1
Group 2 metals’ CC
+2
Group 3 metals’ CC
+3
Transition metals groups 3-12 CC
No straightforward pattern; many can form more than one positive ion
Group 15 CC
-3
Group 16 CC
-2
Group 17 CC
-1
Group 14 CC
Dont usually form ions but when they do: +4 or -4
Group 18 CC
Dont form ions
Hydrogen CC
+1 when it combines w/ nonmetal
-1 when it combines w/ metal
Oxygen CC
Almost always -2
Exception: In peroxides, where it’s -1
Sulphide CC
-2
Which ions have consistent combining capacities?
Complex/polyatomic
Name and describe the two main categories of ionic compounds
- Binary compounds (made from a metal + nonmetal, names of nonmetal end in “ide”)
- Polyatomic ion compounds (made w/ polyatomic ions)
Ionic bond is always between what two ions?
Positive and negative
Positive ions are either…. And negative ions are either…
Metals, NH4^+ or H3O^+
Nonmetals or a negative polyatomic ion
How to name Ionic compounds?
Metal first, then nonmetal with ending “ide”
How to name Molecular/Covalent compounds?
First element with prefix (excluding mono), then second element with prefix and ending “ide”
