Determine the oxidation number of all the elements in the balanced redox reaction shown below. drag each label to the appropriate target.

Since there are no choices given, I will explain the oxidation number. Oxidation number may also be called as oxidation state where it is the over-all quantity of electrons that an atom can gain or lose in order for it to form a chemical bond with another atom to form a compound. Each element or atom that is involved in the losing or sharing of electron known as redox reaction (oxidation – reaction) has a distinctive oxidation number that has the capability to give, obtain or share electrons. In a neutral substance, the sum of the oxidation number of both atoms in a compound is zero. Lithium has an oxidation number of negative one and oxygen has an oxidation number of negative 2. When sharing electrons, the number of needed electrons must be gained by one element and lost by the other element. The chemical formula is Li2O.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

that tool would be a compass