IMG_NEW_0003_001 - electrons more tightly than hydrogen,...

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l3 t4 H D I I H H I ICJ I I H H I I I I H H 2.1 Li 1.0 Be 1.5 Na 0.9 Mg 1.2 K 0.8 Ca 1.0 Electronegativities F leclrnneoal ivirv increases ! b I H i--; sp" I H-;^ H l' I H F- c c 3 G 0a D -. =' o- o o o l! o oa H H-N-H I I I H sd st' ..e H-Ue -.' sp3 l 1i Dipole Moments When atoms of different ele ctron:oa:'r i:::s -r:-:' covalent bonds, the elecrons are nL1: s]:are'j :;'l'. ' There is a greater electron densi4 oil lili I:'cii electronegative atom. uhich eives rise to a dipole moment. ^+ d H- H , This arorv ahvays points in the direction of the negatire charge Electronegativities reflect the relative affinity of an atom for electrons. Therefore, carbon holds
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Unformatted text preview: electrons more tightly than hydrogen, but less strongly than nitrogen or oxygen. A more complete table can be found on page 7 of the tert Dipole Moments (continued) 16 Drpoie mon-)ents are additiie:the dipole moment of : r:loler',rl. is ihe sum oith: bond dipole moments. R:n:::r::r--,iipcle mcn.etts are rectorsl \ +\ ++-L ^l bd \ H 6 o \ H l H- N:-I' H r----t-l ElL A I H I I I H t- a^- n I' I : B 2.0 C 2.5 N 3.0 o 3.5 F 4.0 A1 1.5 Si 1.8 P 2.1 S 2.5 CI 3.0 Br 2.8 I 2.5...
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