In ammonia the oxidation number of N is:
-2
3
-3
2
Oxidation number is –3
An element A in a compound ABD has oxidation number An-. It is oxidised by Cr2O−72 in acid medium. In the experiment 1.68×10−3 x moles ofK2Cr2O7 were used for 3.26×10−3 moles of ABD. The new oxidation number of A after oxidation is:
An element A in a compound ABD has oxidation number A n-. It is oxidised by Cr2O−27 in acidic medium. In the experiment 1.68×10−3 x moles ofK2Cr2O7 were used for 3.26×10−3 moles of ABD. The new oxidation number of A after oxidation is: