Final answer:The charge on the manganese (Mn) in MnF3 is found by balancing the total negative charge from three fluoride ions (F-), which is -3, with the positive charge on manganese. Therefore, Mn must have a charge of +3 to balance the charge in the compound, making the answer 3+.Explanation:The question here is concerning the charge on manganese (Mn) in the compound manganese fluoride (MnF3). To determine the charge on the manganese ion in MnF3, we need to understand the charge balance in the compound. Each fluoride ion (F) carries a -1 charge. Being that there are three fluoride ions in MnF3, collectively, they contribute a charge of (-1) * 3 = -3. For the compound to be electrically neutral, the manganese ion must balance this with a +3 charge, making the manganese ion have a charge of 3+. Hence, the correct answer to the charge on the manganese in MnF3 is 3+....

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