Give the name and formula of the compound formed when a Mn2+ cation combines with a (PO4)3- anion.

Question

A.
manganese phosphate: Mn3(PO4)2
B.
magnesium phosphate: Mn2(PO4)3
C.
manganese sulfate: Mn2(PO4)3
D.
magnesium sulfate: Mn3(PO4)2
E.
manganese oxalate: Mn2(PO4)3-

Answer 1

To determine the correct name and formula for the compound formed when a Mn²⁺ cation combines with a (PO₄)³⁻ anion, we need to balance the charges.

1. The charge of the Mn²⁺ cation is +2.
2. The charge of the (PO₄)³⁻ anion is -3.

To balance the charges, we can use the following ratio:

• We need 3 Mn²⁺ cations to balance with 2 (PO₄)³⁻ anions.

So, the formula will be:

• 3 Mn²⁺ for a total charge of +6
• 2 (PO₄)³⁻ for a total charge of -6

The resulting formula is Mn₃(PO₄)₂.

Therefore, the name of the compound is manganese phosphate.

Correct answer: A. manganese phosphate: Mn₃(PO₄)₂.