1Which of the following happens when potassium forms an ion? It gains an electron and has an octet in its inner shell It loses an electron and has an octet in the next-lowest energy level It gains an electron and has an octet in the lowest energy level It gains an electron and has an octet in its outer shell.2Which of the following ions is an oxyanion? F- SO4^2- NH4+ SCN-3In the mineral beryl [BeAl2(SiO3)6], what is the ratio of beryllium to aluminum to silicate (SiO3)? 1 : 1 : 1 1 : 2 : 6 3 : 2 : 1 6 : 3 : 14The bond energies (kJ/mol) in compounds A, B, C, and D are 350, 500, 180, and 1,450, respectivelyWhich compound will most likely conduct electricity when dissolved in water? compound A compound B compound C compound D
1) Potassium forms cations; it loses electronsSince only one option has it losing electrons, that one must be right, so the answer is B2) Only one of the choices is an anion containing oxygen, so my guess is that it's that one: SO4 2-3) For every one beryllium, there are two aluminums and six silicates, so it's 1:2:64) I'm guessing on this one, but the lower the bond energy in a compound, I THINK the more ionic character it hasAn ionic compound is better able to conduct electricity than a covalent one, so my guess is compound C.
