D, since it can hold up to 10 electrons
Answer: The oxidation number of Cu decreased
Explanation: In Cu2O equation Cu has an oxidation number of
Cu+1 O-2
then in the product side Cu is represented as a single element.
The rule on oxidation number for an individual element is always O
So Cu has 0 oxidation number.
Aluminium + Dioxygen = Ruby
- log (3.26x10^-2) = 1.49 which is B
