Multivalent Ions CuCl CuCl2

Some of the metals —-The transition metals form different compound eg. Cu1+ or Cu2+ Fe2+ or Fe3+ • These compounds that contain properties • Each of these compounds need to be distinguished from each other • The transition metals are elements that commonly have multiple valence shell electrons.

Example: Copper + Oxygen Copper and oxygen could have two different formulas with two completely different properties. Cu2+ Cu1+ e.g. CuO and Cu2O In order to differentiate between the two, compounds use a different name to avoid confusion.

Naming Multivalent Ionic Compounds Same as Ionic Binary but it indicates the metals charge in ROMAN NUMERAL SnO2  Sn4+O2-  tin (IV) oxide SnO  Sn2+O2-  tin (II) oxide List the metal name first After the metal name indicate the ion charge in brackets using roman numerals. The non-metal has -ide suffix added.

Example 1 - Try yourself Ni and O

Example 2 - Try yourself Mn and P

Example 3 - Try yourself Mo and Se