Here's how to break down the name:

* Mn: This symbol represents the element Manganese.

* (NO₃)₃: This is the nitrate ion (NO₃⁻), and the subscript 3 indicates there are three of these ions.

* (III): This Roman numeral indicates the oxidation state of Manganese in this compound is +3.

Therefore, the full name is Manganese(III) nitrate.