Na2S2O3 oxidation number
+1 for each Na
-2 for S
Oxidation no of sulphur is +2.
This compound is sodium thiosulphate. S represents +6 oxidation number.
There is at least one oxidation number shared by all the elements in a periodic table column, but some of the elements may have more than one oxidation number and some of these additional oxidation numbers may not be possible for all the elements in a column.
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
100 will be oxidation no.in Fe2O3.
Oxidation no of sulphur is +2.
+2
This compound is sodium thiosulphate. S represents +6 oxidation number.
Oxidation numbers in Fe2O3 are respectively: Fe => +3 and O => -2
There is at least one oxidation number shared by all the elements in a periodic table column, but some of the elements may have more than one oxidation number and some of these additional oxidation numbers may not be possible for all the elements in a column.
Hydrogen has -1 and +1 oxidation numbers. Other elements have +1 only
100 will be oxidation no.in Fe2O3.
They do not. The group 2 elements, Be, Mg, Ca etc, have oxidation numbers of +2.
Transition metals
+1 only for all elements (except for hydrogen) hydrogen can have +1 and -1 as their oxidation numbers.
Of course they can have.Many elements have several oxidation numbers.
Most elements can have more than one oxidation number, but I think you are looking for the transition elements in groups 3 - 12.