The correct answer is: C. SO4
Sulfite is a mineral group that contains one or more metallic elements in combination with the sulphate compound SO4. Sulphate is a chemical compound with the formula SO4. It is a salt of sulfuric acid. Sulphate is a common anion in nature, and it is found in many minerals, including gypsum, barite, and celestine. Sulphate is also used in many industrial processes, such as the production of paper, detergents, and fertilizers.
A. SO3 is sulfur trioxide, which is a gas at room temperature. It is a strong acid and a powerful oxidizing agent.
B. SO2 is sulfur dioxide, which is a gas at room temperature. It is a weak acid and a moderate oxidizing agent.
D. SO is sulfur monoxide, which is a gas at room temperature. It is a very reactive gas and is not found in nature.