Answer: D. It is the currently accepted atomic model.
Explanation:
It is the mordern atomic model, also known as the Electron Cloud Model. Indicating that the nucleus of an atom is surrounded by a cloud of electrons.
Answer: Diatomic elements are a subgroup of diatomic molecules.
Explanation:
Every molecule that consists of two atoms is diatomic. Only if the two atoms are the same there is a diatomic element.
So O2 is a diatomic element (and thus a diatomic molecule)
HCl is a diatomic molecule, but not a diatomic element.
One example of diatomic is earth's atmosphere is a host to a few different diatomic molecules, including nitrogen (N2) and oxygen (O2, not to be confused with ozone, which is O3).
Hopes this helps you!
Correct me if I’m wrongs but the answer should be 21.844