Refer to the electronegativity values in Figure 12.9 and predict which of the following bonds is most polar: H—N, H—O, or H—F.

Figure 12.9

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1 -A 2 IA 3 3 32 283 28 Li 1.0 11 2 IIA 4 4 Na 0.9 19 5 Be 1,5 12 K 0.8 37 Mg 12 20 Rb 0.8 55 7 Ca 1.0 Electronegativity. 38 Cs 0.7 87 3 IIIB 21 Sr 1.0 56 Fr Sc 13 39 Ba 09 Electronegativity INCREASES 88 value 4 IVB 22 Y 1.2 Ra 57 Ti L 89 1.5 40 La 1.1 5 VB 23 Zr 14 72 Ac PERIODIC TABLE OF THE ELEMENTS H 2.1 V 1,6 41 Hf 13 104 6 VIB 24 Nb 1,6 73 Rf Cr 16 42 Ta 1.5 7 VIIB 25 105 Mo 1.8 74 Db 1.5 43 W 17 8 VIII 106 26 Tc 1.9 75 Sg Fe 19 44 Re 1,9 107 9 VIII 27 Ru 22 76 Bh Co 45 Os 22 108 10 VIII 28 Rh 2.2 77 Hs Ni 46 Ir 22 109 11 IB 29 Pd Mt 2.2 78 Cu 9 47 Pt 2.2 110 12 IIB 30 13 ΠΙΑ 5 79 Ds B 2.0 Zn 1.6 Ag 48 19 13 Au 111 24 14 IVA 6 AI 1.5 Cd 31 Rg _395_FS 17 180 C 2.5 14 Ga 1.6. 49 Hg 112 19 15 VA 7 Si 1.8 32 In Cn 1.7 81 N 3.0 15 Ge 1.8 TI 50 1.8 16 VIA P 2.1 113 Nh 33 Sn 1.8 82 As 16 20 51 Pb 1.9 3.5 114 17 18 VIIA VIIIA 9 S 25 FI 34 Sb 1.9 83 F 2 4.0 He Se 24 Bi 19 17 52 115 CL 3.0 35 Te 2.1 84 Mc 10 Br 2.8 53 Po 20 116 Ne 18 I 25 85 Ar Lv 36 Kr 117 54 Xe At 86 22 Rn Ts 118 Og