Why does electronegativity increase as you go across a period on the periodic table? O Increasing attractive force between protons and electrons
O Increasing repulsion force between protons and electrons
O Increasing attractive force between core electrons and valence electrons
Increasing repulsion force between core electrons and valence electrons

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.