Classify each statement about atomic constituents as either true or false. True False Answer Bank A positive ion is an atom that has lost one or more electrons. The isotopes of a given element all have the same number of protons but different numbers of neutrons. Atoms have a positively charged nucleus. Neutrons have no charge. A negative ion is an atom that has lost one or more protons. Electrons are much heavier than protons. Protons are located in the space around the nucleus. Neutral isotopes of a given element all have different numbers of electrons