It is composed of lead in its +4 oxidation state.
Their most common oxidation states are 2, +2, +4, and +6.
Less common oxidation states of gold include 1, +2, and +5.
The data can be extended to include products in lower oxidation states.
The most common oxidation states are +2, +3, +4, and +8.
The nitrogen is in the -3 and +5 oxidation states.
For each oxidation state use the parameters from the table shown below.
Chemistry in the 0 oxidation state is far more limited.
Despite such figures, the +2 oxidation state is rare, with +4 and +6 being more common.
Many elements can exist in more than one oxidation state.