1. Non metals gain electrons in the formation of ionic compounds.
FALSE. Metals are losers.
2. Metals form cations in ionic compounds.
TRUE. A cation is an atom with positive charge, so it is attracted by the cathode, the negative terminal in a vacuum tube or electrolytic cell. Metals are losers, so they form cations.
3. When an ionic bond forms an electron is transferred from the nonmetal to the metal element.
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4. Main group elements achieve a noble gas electron configuration in ionic compounds.
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5. Ionic bonds form as a result of electrostatic attraction between ions.
"Ionic bond" is an opinion. A bond exists when two atoms share an electron. If they share equally, the bond is called covalent. If one atom hogs the electron entirely, it is called ionic. Well, what do you call it when the sharing is between those extremes? You give an opinion, that's what.