Medicine General e1189a85 Which of the following metal ions is associated with secondary Parkinsonism - A Mangnese (Mn) B Magnesium (Mg) C Selenium (Se) D Molybdenum (Mo) High-Yield Explanation Answer- A. Mangnese (Mn)Manganese ion exposure is implicated in free radical damage of the basal ganglia causing Parkinsonism.