Leader: Course: Instructor: Date: Exam 3 review Supplemental Instruction Iowa State University Nevin Chem 177 Kingston 11/18/13 Show the trend for atomic radius, ionization energy, electronegativity, electron affinity, and zeffective. Which atom would have a bigger radius πΆπ2+ ππ πΆπ − . Find the z effective for both. Which of the following atoms would these successive values of ionization energies match most likely? I1 = 578 I2 =1451 I3 = 7733 a) K b) Al c) Ca d) O e) F Write an isoelectronic series in order of increasing atomic number for P, Cl, S, K, Ca Supplemental Instruction 1060 Hixson-Lied Student Success Center οΆ 294-6624 οΆ www.si.iastate.edu Which of the two shows the electron affinity energy change a) ππ(π) → ππ+ + π − b) ππ(π) + π − → ππ− Give an example of an element with positive electron affinity Complete and balance the reactions πΎ2 π + π»2 π → Metal Oxide + Water ο πΆπ2 + ππππ» → Non-metal oxide + Base ο ______ + _______ ππ3 + π»2 π → Non-metal oxide + water ο What electronegativity difference would a bond be considered non polar, polar, and ionic? Which has higher lattice energy? NaCl or CaCl_2 What is the relationship between lattice energy and Atomic radius? Draw the lewis dot structure for the following molecules: Find Formal charges, show net polarity. π2 ππ42− HCN Estimate the bond enthalpy for the following reaction: 2 πΆπ»4 (π) + π2 (π) → 2πΆπ»3 ππ»(π) 1) 2) 3) 4) 5) 6) Draw the lewis structures Show net polarity Show hybridization of each bond List how many Sigma and Pi bonds there are Write the geometry (Electron Domain Geometry and Molecular) Predict the bond angles XeF4 CH4 SF6 πΆπ2 πΆπ NO3 – Draw an MO Diagram for OF +, find the bond order, label as paramagnetic or diamagnetic.