Oxidation states of $P$ in $H_{4}P_{2}O_{5}, H_{4}P_{2}O_{6}, H_{4}P_{2}O_{7}$ are respectively:

Fill in the blanks:
$(1)$ Oxidation number of $Cr$ in $Na_3Cr_3O_{10}$ is ........
$(2)$ Oxidation number of $H$ in lithium aluminum hydride $(LiAlH_4)$ is .......
$(3)$ Oxidation number of oxygen in potassium ozonide $(KO_3)$ is .........
$(4)$ Oxidation number of $C$ in fullerene and graphite is .......

What is the oxidation number of sulfur in $H_2SO_5$?

The sum of the oxidation numbers of all atoms in the $S_{2}O_{3}^{2-}$ ion is:

The difference between the oxidation numbers of the two types of sulphur atoms in $Na_2S_4O_6$ is:

Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction,the oxidation number of chromium