Find the oxidation number of the element underlined in the following species, PbunderlineSO_4,underlineU_2O_7^(2-),underlineB_4O_7^(2-),underline(Cr)O_4^(2-)

Find the oxidation number of the element underlined in the following s

1.	Find the oxidation number of the element underlined in the following species, PbunderlineSO_4,underlineU_2O_7^(2-),underlineB_4O_7^(2-),underline(Cr)O_4^(2-)
Answer» SOLUTION :S=+6 in `PbSO_4,U=+5` in `U_2O_7^4,B=+3` in `B_4O_7^(2-),Cr=+6` in `CrO_4^(2-)`