Will give 'brainiest' / will give '5 stars' / will give ' you'! 15. metallic bonds form between * 1 point cations and protons anions and protons cations and anions cations and electrons 16. what is the formula for lithium nitride? * 1 point lin li2l3 li3n lin3 17. which type of solid is likely to be the best conductor of electricity? * 1 point nonmetal element ionic compound covalent compound metal element 18. when an atom gains an electron, it forms a * 1 point anion cation polyatomic ion neutral ion 19. mg3p2 - which element is the cation? * 1 point mg p mg3p2 p2 20. which of the following has the highest melting point? * 1 point metallic compound ionic compound covalent compound 21. what statement is true about carbon-12 and carbon-14? * 1 point they have different number of protons they are isotopes of carbon they have the same mass number they have an identical mass 22. what is the name of the phase change that occurs when a substance changes from a gas to a liquid? * 1 point evaporation condensation freezing melting