Oxidation state of sulphur in fools gold i.e. iron pyrites is (without sign only magnitude)

What is the oxidation state of sulphur in sulphate ion ?

What is oxidation state of sulphur is Caro's acid ?

Oxidation state of iron in Fe(CO)_(4) is

NaHSO_3overset(NaCO_3)to(A)underset(Delta)overset("Element S")to(B)overset(I_2)to( C) Find out the oxidation state of sulphur in the compound (A) to ( C).Give average value without sign, if the compound formed has more than one sulphur atoms. Does not consider the decimal.For example if the value is 3.5 than neglact the decimal and consider it as 35

Oxidation state of iron and chromium in chromite ore is :

What mass of sulphur is contained in 30 g of iron pyrites (FeS_(2))?

Most stable oxidation state of gold is:

The oxidation state of sulphur in sodium tetrathionate ( Na_(2)S_(4)O_(6) ) is :

The average oxidation state of sulphur atom in S_4O_6^(2-) ion is

Statement-1 : In caro's acid the oxidation state of sulphur is +5 Statement-2: In caro's acid, there is one peroxolinkage. (-O-O-)