Assign oxidation number of atoms of the following species. `CaO_2`

Assign oxidation number of P in the following species. H_3PO_4

Assign oxidation number B in NaBH_4

Assign oxidation number Mn in KMnO_4

Assign oxidation number S in H_2SO_4

Assign oxidation number. P in NaH_2PO_4

Calculate the oxidation number of all the atoms in the following compounds and ions. 'CO_2, SiO_2, PbSO_4, ClO_4^-'

Determine the oxidation number of the element underlined in the following species. 'underlineS i H_4, underlineB F_3, underlineB O_4^-'

Assign oxidation number to the underlined element in the following species