Explanation:
it should be option number (D) Iron (III) oxide
Answer:
Reverse the
reaction
Explanation:
Reactions:

Overall:

As can be seen, in the overall reaction we have
in the reactants like in the second reaction and
in the products. The
is in the first reaction but as a reactant so we need to reverse that reaction:

Combining:


Answer:
Hi there!
The correct answer to this question is: electrons enter orbitals of lowest energy first.
The last one is the answer to your question. D is the answer