When an excited electron in a hydrogen atom falls from =5 to =2, a photon of blue light is emitted. if an excited electron in an he+ ion falls from =4, which energy level must it fall to ) for blue light of a similar wavelength to be emitted?

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.