Correct the following statement: “The bonds in solid PbCl2 are ionic; the bond in a HCl molecule is covalent. Thus, all of the valence electrons in PbCl2 are located on the Cl– ions, and all of the valence electrons in a HCl molecule are shared between the H and Cl atoms.”

How can I find the lattice energy of KBr when I have information such as entalpy of formation of KBr entalpy of sublimation of K entalpy of vaporization of Br2 bond energy of Br2 first ionization energy of K electron affinty of Br

Write the two resonances formula for benzene, C6H6, (note the carbon atoms are all bonded to each other forming a ring.). What is the geometry about any one of the carbon atoms? What hybridization would be used in valence bond theory to describe the bonding? The ∆Hf for C6H6(g) is actually -83 kJ/mol. What is the equation for the standard molar enthalpy of formation form benzene? Use the standard enthalpy of formation equation and ∆Hf for C(g) 715 kJ/mol and H2(g) is 0 kJ/mol. Calculate the estimate enthalpy of formation of benzene. Then calculate the resonance energy of benzene. The resonance energy is defined as ∆Hf (estimated) – ∆Hf (actual).

#100

A compound is being tested for use as a rocket propellant. The analysis showed that this compound contained 18.54% F, 34.61% Cl, and 46.85% O.a. Suppose the molecular formula is the same as the empirical formula, describing the Lewis structure for this moleculeb. Use the VSEPR theory to predict the structure of this moleculec. List the three anions of the elements according to their increment in the radius of the ion. Ar F = 19, Cl = 35,5, O= 16

list the following ionic compounds: CsCl, ScN, MgO, LiCl, in order from smallest to largest lattice energy E and explain the order based on the strength of ionic interactions in each compound