Answer: Identifies the number of protons a single atom of the element contains.
Explanation: The atomic number helps people identify elements according to the number of protons one atom of the element has. It essentially defines the element. While having a neutral charge, it also provides the number of electrons the element has (in one atom).
I think it’s S umm let me know if I’m wrong but I’m. 80 precent sure it’s S
The sun doesn't heat the air much directly because the radiation is all visible light, which isn't easily absorbed by gases in the atmosphere. So I would disagree