In decay, an atomic nucleus emits a particle called a nucleus, which results in the transformation of an atom with a mass number four less and an atomic number two less.

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