Answer:
Astatine and chlorine are halogens only. Nitrogen and sulfur are non metals only. Krypton (Kr) is noble gas only.
Explanation:
halogens only
non metals only
noble gas only
halogen
i hope this helps :]
Baking
Answer: The answer is D
Usatestprep
Heat is the sum of all the kinetic energies of all the molecules of an object, while temperature is the average kinetic energy of the molecules of an object