5 Questions
Which valence of Mn is always ionic?
Valence 1
Which valence of Mn can be either ionic or covalent?
Valence 4
Which valences of Mn are covalent?
Valence 6
What is the maximum oxidation state suggested by the electronic structure of Mn?
(+VII)
Which oxidation state of Mn is represented by manganates such as Na2MnO4?
(+VI)
Study Notes
Properties and Oxidation States of Manganese
- Manganese (Mn) exhibits valences ranging from 1 to 7.
- Valences 1-3 are always ionic, while valence 4 can be either ionic or covalent.
- Valences 6 and 7 are covalent.
- The electronic structure of manganese is d5s2, suggesting a maximum oxidation state of (+VII).
- Manganese has the widest range of oxidation states among all elements, from (-III) to (+VII).
- Small amounts of MnSO4 are commonly added to fertilizers due to its properties.
- The basic character of manganese diminishes with increased oxidation state.
- Manganese oxides MnO and Mn2O3 are basic and ionic.
- MnO2 is amphoteric and does not exist as Mn4+ ions.
- Manganese in the (+V) oxidation state is uncommon, while (+VI) is represented by manganates such as Na2MnO4.
- Mn(+VII) occurs as Mn2O7, which is strongly acidic, and permanganic acid HMnO4 is one of the strongest known acids.
- Most manganese compounds are colored, with Mn2+ being pale pink and MnO2 being black.
Test your knowledge of manganese and its oxidation states with this quiz! Learn about the valences and electronic structure of this versatile element, and explore its wide range of oxidation states.
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