The oxide of a certain element dissolves in water to form an acidic solution. This element is most likely a

Non-metal oxides are generally acidic in nature; when they dissolve in water they form acids (e.g., SO₃ + H₂O → H₂SO₄). Metal oxides are typically basic or amphoteric. Noble gases do not form oxides under normal conditions, and transition metal oxides are generally basic or amphoteric.