When an element forms an anion, what happens to the radius? When an element forms a cation, what happens to the radius? Why? Define the term isoelectronic. When comparing sizes of ions, which ion has the largest radius, and which ion has the smallest radius in an isoelectronic series? Why?
Answer to relevant QuestionsConsider the ions Sc3+, Cl-, K+, Ca2+, and S2-. Match these ions to the following pictures that represent the relative sizes of the ions. What noble gas has the same electron configuration as each of the ions in the following compounds? a. cesium sulfide b. strontium fluoride c. calcium nitride d. aluminum bromide Use the following data to estimate ΔHof for magnesium fluoride. Mg(s) + F2(g) → MgF2(s) Compare your answers from parts a and b of Exercise 43 with ΔH values calculated for each reaction using standard enthalpies of formation in Appendix 4. Do enthalpy changes calculated from bond energies give a reasonable ...The standard enthalpies of formation of S(g), F(g), SF4(g), and SF6(g) are 1278.8 kJ/ mol, 179.0 kJ/ mol, –775 kJ/ mol, and –1209 kJ/ mol, respectively. a. Use these data to estimate the energy of an SOF bond. b. Compare ...
Post your question