1
Cl has an oxidation number of -1 because it is in the group 7a. -1*6 = -6 K has an oxidation number of +1 and there are three of them. -6+3+x = 0 The oxidation number of Co is +3.
+4
+2 for Co, -2 for S
The oxidation number for Co in CoS is +2, a divalent cobalt cation, since the only anion formed from a single sulfur atom has a charge of -2.
The oxidation number is + for C and -2 for O.
1
Cl has an oxidation number of -1 because it is in the group 7a. -1*6 = -6 K has an oxidation number of +1 and there are three of them. -6+3+x = 0 The oxidation number of Co is +3.
+4
+2 for Co, -2 for S
The oxidation number for Co in CoS is +2, a divalent cobalt cation, since the only anion formed from a single sulfur atom has a charge of -2.
O.S. of Mn in Mn(CO)2 is 0.
Al(SO4)3 ^That is completely wrong. Al(SO4)3 is aluminum sulfate cobalt ii sulfide is CoS actually you both are wronq. its really CoSO4 <<< cobalt sulfate Wow. He/She was right. Your totally wrong. Cobalt (II) Co^2+ and Sulfide is S^2- So the answer is CoS. Signs cancel themselves out..
Co = +2 oxidation C = +4 oxidation O = -2 oxidation
+4 oxygen has an oxidation of -2, so do 3 times -2=-6, i believe Ca is a +2 and you must get the numbers to equal 0. so the answer is a +4
oxidation number of I is -1. oxidation number of F is +1.
Hydrogen's oxidation number is +1.Chlorin's oxidation number is +1.Oxygen's oxidation number is -2.