Question

The difference in electronegativity between two atoms largely determines the type of chemical bond formed. Atoms with similar electronegativities will share electrons and form a covalent bond. In contrast, when the difference in electronegativity is large, electrons will be permanently transferred from one atom to another, forming an ionic bond. Using the figures below, determine the type of chemical bond (% ionic and % covalent) in the following element pairs (Hint: (1) The periodic table lists the electronegativities for all elements. (2) You are interested in the difference. (3) The plot will help you determine the percentage of ionic / covalent bond.): 100 90 70 60 50 40 20 10 Difference in Electronegativity Percent Ionic Character eo888 3888 Dincrence in EiceuoicgaulVity Figure 1: The plot shows lonic bonds (y-axds) as a function of difference in electronegativity (x-adis) Periodic Table of the Elements Electronegaivity SA TH Re c No Ar Al No Mg an se th M Se Kr Ge Br Ce Cu Zn Aas Ca Se TI Cr Mn Fe Ni 154 Xe Ag Pd ca Sb Te Rb Mo Tr PL Bi TI Po At Rn Au Ha w Re Os Pr Hf Te and the data uranowe Emnts 104 etanly for very short hat Fr Ra 42 64 Th He Go Dy Er Tm Lu Sm Eu Pr Nd 514 Pm La Co Lanthanides 11 TEA Mdi Er No CE Frm Lr Pu Am Cm Th Pa Np- Ad Actnides 15 14 Figure 2: Periodic table showing electronegativity Using the figures above, match the following element pairs with their electronegativity and type of chemical bond ( % ionic and % covalent). 383! 816Ra5 A 7 Ba Hf Te Re Os In Pt Au Hg T Pb 235 Bi Po At Rn a7 13 2.30 23 230 142 2.40 -103 Fr Ra Elesents 104 exist onty for vary short hall-ifes and the data is unknown a7 70 Lanthenides La Ce Pr Pm Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu 110 13 14 112 17 14 12 12 124 137 100 Actinides Ac Th Pa Np Pu Am Cm Bk cr Es Fm Md No Lr 13 15 13 13 1.28 a 13 Figure 2: Periodic table showing electronegativity Using the figures above, match the following element pairs with their electronegativity and type of chemical bond (% ionic and % covalent). Fe-O [ Choose) Al-O [Choose] Hg-S [ Choose) 355 E sF3 통525 8E: 2

Answer 1

100 90 80 70 Al D 60 50 40 30 20 Fe D 10 2 e Difference in Elefugre 2 Percent Ionic Character

Fe-0 183 3. Valnas AEN (Kudmnyorly ditemnte Caralet A1 Vahs AFN

bo Land / Crrant Valus Cavabout EN JDonic -Coalt