2 H. There are + • Ý: The Lewis representation above depicts a reaction between hydrogen (blue) and a main-group element from group [ In this representation, each Y atom needs 2 electron(s) to complete its octet, and gains these electrons by forming unshared electron pair(s) and bonding electron pair(s) in the product molecule. The bonds in the product are [ Submit Answer - Retry Entire Group HIV: v 9 more group attempts remaining (red). bond(s) with atoms of H.

Calculate the ΔHrxn using bond enthalpies for the balanced equation below (Lewis structures picture provided). answer options:  A. -564 kJ B. 286 kJ C. -128 kJ D. -219 kJ   Thank you!!

D. Calculate the enthalpy of dissociation (or bond energy) of the X-X bond. Treat multiplication as consecutive addition for the purpose of sig. figs. Reaction AH value Reaction/Process Enthalpy of sublimation of M i. AHsub = 137 kJ/mol First ionization energy of M i. AHIE1 = 765 kJ/mol -> AHIE2 = 1221 kJ/mol Second ionization iii. energy of M AHIE3 = 7453 kJ/mol Third ionization iv. energy of M Enthalpy of dissociation of X2 (g) AHD = ?? V. AHEA1 = -366 kJ/mol First electron affinity of X %3! vi. AHlattice = -5230. kJ/mol vii. Lattice energy of MX3 Enthalpy of formation vii. M (s) + X2 (g) MX3 (s) AH: = 3882 kJ/mol of MX3

Questions 6a, b, c, d is finked to one another and focus on the molecule shown below. O: H C2 H. I-Z: