+4 for lead
Lead (II) Dichromate
MnO2 manganese(IV) oxide. Oxygen has a -2 oxidation state (oxidation state is a better term here as oxidation number is better used for complexes- they give the same answer for this compound)
The oxidation number of an element depend on another element it react with to form a compound e.g manganese(iv)oxide mno4 the oxidation number of oxygen there is four while the oxidation number of manganse is 7 in most radox reaction the oxidation number of oxygen is usually 4 when writing the full equation
The name of this compound is Pb(IV) sulfite or lead disulfite.
Nitrogen has the oxidation number of +IV and oxygen atoms mark as -II.
Lead (II) Dichromate
lead (IV) ion is Pb4+ ion. Note that Pb4+ is never found as an ion- the (IV) is an oxidation number or oxidation state.
Plumbic = Lead(IV) Pb(Cr2O7)2
The chemical formula of lead(IV) chromate is PbCrO4.
You probably mean lead chromate since you have mentioned an oxidation state of 2+ for the lead ion and the chromate ion has an oxidation state of 2-. Lead chromate is yellow. Please see the link.
MnO2 manganese(IV) oxide. Oxygen has a -2 oxidation state (oxidation state is a better term here as oxidation number is better used for complexes- they give the same answer for this compound)
The formula of lead (II) sulphide is PbS whilst the formula of lead (IV) sulphide is PbS2. The formula is: PbS and the number of Solubility product constants is 3x10^-25 if you're interested;)
The oxidation number of an element depend on another element it react with to form a compound e.g manganese(iv)oxide mno4 the oxidation number of oxygen there is four while the oxidation number of manganse is 7 in most radox reaction the oxidation number of oxygen is usually 4 when writing the full equation
The name of this compound is Pb(IV) sulfite or lead disulfite.
Lead has two oxidation states (+4 and +2). As a result, there are two compounds composed of lead and sulfate: lead(IV) sulfate, which is Pb(SO4)2, and lead(II) sulfate, which is PbSO4.
Plumbic oxide, is Lead (IV) oxide. It has the formula of PbO2, which is neutral. However if you wanted to know the oxidation state of the lead, then it is +4.
The common name is lead sulfate. In this compound, Pb ion is in +4 oxidation status. Therefore the systematic name is Lead(IV) Sulfate(VI).