Which of the following sets of oxidation numbers is not correct? kmno4 : k +2, mn +6, o -2 nacho2 : na +1, c +2, h +1, o -2 zn(oh)2 : zn +2, o -2, h +1 scl2 : s +2, cl -1

KMnO4 has the incorrect set of oxidation numbers. Whenever there is an alkali metal, it has an oxidation number of +1. As you can see, K is said to have an oxidation number of +2, so it is incorrect.

hi,

the capital city of australia is canberra.

the correct answer is:

a. formation of precipitation