rust
A pure metal has the oxidation state zero.
No, Pb is not a transition metal and it has 2 oxidation states
The subscript of the second ion identifies the oxidation state of the transition metal
Roman numerals are used to indicate oxidation states.
Manganese
A pure metal has the oxidation state zero.
The subscript of the second ion identifies the oxidation state of the transition metal
No, Pb is not a transition metal and it has 2 oxidation states
Mg
The subscript of the second ion identifies the oxidation state of the transition metal
Yes, It can exist in both a 2+ and a 3+ oxidation state.
Roman numerals are used to indicate oxidation states.
Manganese
Cr is a transition metal and has a variation of oxidation number from 0 in the elemental state to +6 in the dichromate ion.
Romann numerals are used: (I), (II)...
Preferably in modern nomenclature, by capital "Roman numerals" within parentheses immediately following the name of a transition metal element cation in a chemical compound. For transition metal elements that have only two common cationic oxidation states, the oxidation states can alternatively be indicated by the suffix "ic" for the more positive oxidation state and "ous" for the less positive ones. Examples are "ferric" for "iron (III)" and "ferrous" for "iron (II)". If the transition metal is in an anion, the most common indication is with suffixes and prefixes, but the appended oxidation state in parentheses can also be used. Details may be different for different transition metals and should be sought in an authoritative reference source.
Preferably in modern nomenclature, by capital "Roman numerals" within parentheses immediately following the name of a transition metal element cation in a chemical compound. For transition metal elements that have only two common cationic oxidation states, the oxidation states can alternatively be indicated by the suffix "ic" for the more positive oxidation state and "ous" for the less positive ones. Examples are "ferric" for "iron (III)" and "ferrous" for "iron (II)". If the transition metal is in an anion, the most common indication is with suffixes and prefixes, but the appended oxidation state in parentheses can also be used. Details may be different for different transition metals and should be sought in an authoritative reference source.