What determines the mass number of an element? (2 points) the number of protons minus the number of electrons the total number of protons, electrons, and neutrons the total number of neutrons and protons the number of protons

Most ionic compouds are crystalline solids at room temperature. true falseionic compounds are electrically neutral. true falseionic compounds generally have low melting points. true falsewhen melted, ionic compounds do not conduct electricity. true falsethe electrostatic attraction between an anion and a cation is an ionic bond. true false