Which of the following choices correctly names both of the following ions:Mn⁵⁺ and P^3–.

For Mn5+, the name of the ion is based on the element name 'Manganese' followed by the charge in Roman numerals in parentheses, which is (V) for a +5 charge. Therefore, it is named 'Manganese (V) ion'.

For P3–, the name of the ion is derived from the element name 'Phosphorus', changing the ending to '-ide' to indicate it is an anion. Therefore, it is named 'Phosphide ion'.