Which of the following terms refers to areas of gas on the on the suns surface that are cooler than the gases around them

Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom