A + B → AB: ✔ combination
AB → A + B: ✔ breakdown
Hydrocarbon + O2 → CO2 + H2O: <span>✔ oxidation</span>
AB + CD → AD + CB: <span>✔ exchange</span>
Oxygen and Nitrogen are the most alike among the listed elements due to their proximity in the periodic table. While this reasoning may not be particularly robust, these two elements share certain similarities. They are both classified as non-metals, exhibit high electronegativity, exist as diatomic gases in their elemental forms, contain a similar number of valence electrons, and generally act as oxidizing agents. Although Oxygen and Chlorine also show similarities, they are not as closely related as Oxygen and Nitrogen.
