Manganese (Mn) is a silver-colored metal. It reacts with oxygen to form manganese oxide (MnO2), which has two oxygen atoms for every manganese
atom. Which statement describes the properties of manganese oxide?
It will be a gas because there are more oxygen atoms.
Its properties will be different from manganese and oxygen because the properties depend on the type of atoms and how they are arranged.
its properties will be different from manganese and oxygen because it will have some properties of each of the atoms that makes it up.
It will be a silver-colored metal because manganese is heavier than oxygen.

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.

you need to have a picture of the atom that way we can answer it