Embedded Files
Oxidation numbers show how many electrons are gained (negative) or lost (positive).
Oxidation numbers in ionic compounds
Oxidation numbers in ionic compounds
The oxidation numbers for ions are equal to their charge.
Ex. NaCl
Sodium ion's (Na+ ) oxidation number is +1
Chlorine ion's (Cl- ) oxidation number is -1
Oxidation numbers in molecular compounds
Oxidation numbers in molecular compounds
The oxidation numbers are what the charge would be if the more electronegative element were to take the electrons in the bond.
Ex. CO2
Carbon's oxidation number is +4
Oxygen's oxidation number is -2
Oxidation numbers change in redox reactions
Oxidation numbers change in redox reactions
Oxidation numbers can change as the result of a reaction. In the example below, the Iron is oxidized and loses electrons, increasing its oxidation number from +2 ro +3. Manganese is reduced and gains electrons, reducing its oxidation number from +7 to +2.
PRactice
PRactice
Page updated
Google Sites
Report abuse