Question

Which is more ionic $\mathrm{MnO}\mathrm{or}{\mathrm{Mn}}_2{\mathrm{O}}_7$?

Answer 1

1. Manganese(II) oxide and Manganese(VII) oxide both are oxides of Manganese.
2. Manganese is a chemical element with an atomic number $25.$
3. The relative sizes of cations and anions help us in distinguishing the structure of the ionic compound.
4. Manganese donates its electron to form cation whereas Oxygen accepts the electron to form an anion.
5. Manganese(II) oxide is an inorganic compound with chemical formula$\left(\mathrm{MnO}\right)$ and can be used in components of fertilizers and food additives.
6. It has a rock salt-like structure and is octahedrally coordinated as cations and anions.
7. Manganese(VII) oxide is Manganese heptoxide which is also an inorganic compound with the chemical formula$\left({\mathrm{Mn}}_2{\mathrm{O}}_7\right)$.
8. It is a dangerous oxidizer and flammable liquid and so it is extremely reactive in nature.
9. The strength of the covalent bond depends upon the electronegativity difference and polarising power.
10. There is a larger electronegative difference found in Manganese(II) oxide, so it is rather more ionic in nature.
11. Hence Manganese(VII) oxide is more covalent in nature because of the charge density.
12. Greater is the charge density, the more covalent is the compound.
13. Hence, Manganese(II) oxide $\left(\mathrm{MnO}\right)$ is more ionic than Manganese(VII) oxide$\left({\mathrm{Mn}}_2{\mathrm{O}}_7\right)$.