Multiple ChoiceWhen calcium (Ca) forms an ion, does it gain or lose electrons, and what is the resulting charge?180views
Multiple ChoiceWhich one of the following atoms is most likely to form an anion with a charge of -1?74views
Multiple ChoiceWhich of the following actions would convert a carbide ion (C^{4-}) into a neutral carbon atom?100views
Multiple ChoiceWhen a Mg^{2+} ion becomes a Mg atom, the radius increases because the Mg^{2+} ion:89views
Multiple ChoiceIf an unknown monatomic ion has a 3- charge and contains 10 electrons, what is the identity of the ion?63views