10. Since iron is a transition metal with multiple oxidation numbers, which Fe is bonded in the formula iron oxide Fe2O3?

your answer would be a. 12.5 kg

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

answerleaving cheese out to get moldy;