Rules for Assigning Oxidation (Ref: textbook, pg. 393): Be applied in order o Sum of all atoms' oxidation #s in a compound must equal to its net charge 2 Elementary substance (all the same atom):=0 3 In a compound: Group IA=+1; Group lIA=+2 B Al are +3: Fis-1 4 In a compound: H is +1; except in MH where H is-1 ⑤ In a compound:Ois-2 3Rules for Assig g nin Oxidation # z ( pg ) pp Ref: textbook, pg. 393): Be applied in order: ① Sum of all atoms Sum of all atoms’ oxidation #s in a compound must oxidation #s in a compound must equal to its net charge. ② Elementary substance (all the same atom): = 0 ③ I d G IA 1 G IIA 2 In a compound: Group IA = +1; Group IIA = +2; B, Al are +3; F is -1. ④ In a compound: H is +1; except in MH where H is -1. ⑤ In a compound: O is -2. 3