How to Write the Name for MnO2

In this video we'll write the correct name for MnO2. To write the name for MnO2 we’ll use the Periodic Table and follow some simple rules.

Because MnO2 has a transition metal we need to indicate the ionic charge using Roman numerals in parenthesis.

---Keys for Naming Compounds with Transition Metals---

1) Write the name of transition metal as it appears on the Periodic Table.

2) Write the name and charge for the non-metal. If you have a polyatomic ion, use the Common Ion Table to find and write the formula and charge.

3) Use the total charge on the non-metal (or polyatomic ion) find the charge on the transition metal.

4) After the name for the metal, write its charge as a Roman Numeral in parentheses. Example: Iron (III) chloride

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For a complete tutorial on naming and formula writing for compounds, like Manganese (IV) oxide and more, visit:

Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).

[miteshpanpaliya]

But sir in my textbook it is given that manganese have 2positive charge

[yashika]

Can't we call it Manganese peroxide 👀
Manganese (Mn) valency is 2+
Peroxide (O2) valency is 2-
After crossing them
It becomes
MnO2