Greatest |lattice energy| (strongest bonds) Least |lattice energyl (weakest bonds) Answer Bank LİCI NaCl KCI RÜCI CSCI

The charges and sizes of the ions in an ionic compound affect the strength of the electrostatic interaction between the ions and thus the strength of the lattice energy of the ionic compound. Arrange the compounds according to the magnitudes of their lattice energies based on the relative ion charges and sizes. (highest to lowest) Mgo,NaF,MgF2, and KCI

Predicting the relative lattice energy of binary ionic compounds In each row, pick the compound with the bigger lattice energy. Note: lattice energy is always greater than zero. Which compound has the bigger lattice energy? BaCh BaS Bel₂ KF O BeBr₂ CsF O 1/5

Calculate the lattice energy of RbH (s) using the following thermodynamic data (all data is in kJ/mol). Note that the data given has been perturbed, so looking up the answer is probably not a good idea. AHsublimation 61 kJ/mol Ionization energy = 383 kJ/mol Rb (s) Rb (g) H - H (g) Bond energy = 416 kJ/mol H (g) Electron affinity = -93 kJ/mol RbH (s) AHOf = -72 kJ/mol kJ/mol

Put the following compounds in order of decreasing expected lattice energy. Na3N, MgCl2, NaCl, Mg3N2

Which of the following ionic compounds has the largest lattice formation enthalpy (lattice energy); that is, which compound is most favorable to a stable lattice? A) Csl B) Lil C) LiF D) CsF E) MgO

Using the following data, estimate the overall enthalpy of formation (in kJ/mol) for potassium chloride: K(s) + ½ Cl₂(g) → KCI(s). Process Lattice energy of KCI lonization energy of K Electron affinity of Cl Bond dissociation energy of Cl, Enthalpy of sublimation for K Question 21 of 28 Change in Energy (AHO) -690 kJ/mol 419 kJ/mol -349 kJ/mol 239 kJ/mol 90 kJ/mol

Suppose a chemist discovers a new metallic element and names it "Xercisium" (Xr). Xr exhibits chemical behaviour similar to an alkaline earth. Xr(s) + Cl2(g) → XrCl2(s)   Lattice energy for XrCl2 -2020. kJ/mol First Ionization energy of Xr  500. kJ/mol Second Ionization energy of Xr  950. kJ/mol Electron affinity of Cl -348.7 kJ/mol Bond energy of Cl2  239 kJ/mol Enthalpy of sublimation (atomization) of Xr      200. kJ/mol Use the above data to calculate ΔH°f for Xercisium chloride.