Which group in the periodic table has the highest ionization energy? Which group has the lowest ionization energy?

Periodic Table:

 

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2 3 4 10 6 3 7 11 Li 6.94 1 IA Na 22.99 19 37 5 Rb K 39.10 al 55 Cs 132.91 87 4 Fr (223) 2 IIA Be 9.01 12 Mg 24.31 20 Sr Y 85.47 87.62 88.91 38 Ca Sc 40.08 44.96 56 Ba 137.33 21 88 3 IIIB 39 57 La 138.91 H 89 Ac (226) (227) Ra Atomic number Symbol - Atomic mass 4 IVB 22 Ti 47.88 40 5 VB 23 V 50.94 41 Zr Nb 91.22 92.91 -H 1.01 6 VIB 58 Ce 140.12 90 Th 232.04 24 Cr 52.00 42 Mo 95.95 74 104 105 Rf Db (261) (262) (263) Sg 106 59 Pr 140.91 72 73 W Re Hf Ta 178.49 180.95 183.85 186.21 91 7 VIIB Pa (231) 25 Mn 54.94 43 Tc (99) 75 107 60 Nd 144.24 8 VIII 92 26 Fe 55.85 44 Os 190.2 108 Ru Rh 101.07 102.91 76 61 Pm (147) 9 VIII 93 27 U NP 238.03 (237) Co 58.93 Bh Hs Mt (262) (265) (266) 45 77 Ir 192.22 109 62 Sm 150.36 10 VIII 28 Ni 58.69 46 Pd 106.42 78 63 Eu 151.97 95 94 Am Pu (244) (243) 11 IB 12 IIB 96 13 IIIA 5 Cm (247) B 10.81 13 97 Bk (247) Al 26.98 14 15 IVA 6 C 12.01 14 79 81 82 Pt Au Hg TI Pb 195.08 196.97 200.59 204.38 207.2 110 111 112 113 114 Ds Rg Cn Nh Fl (271) (272) (277) (286) Si 28.09 32 17 16 VA VIA VIIA 7 N 14.01 15 P 30.97 29 30 31 33 As Ge Se Cu Zn Ga 63.55 65.39 69.72 72.63 74.92 78.97 16.00 47 51 48 49 50 52 Ag Cd In Sn Sb Te 107.87 112.41 114.82 118.71 121.75 127.60 80 16 83 Bi 208.98 115 S 32.07 34 84 Po (209) 116 F 19.00 101 17 Md (258) Cl 35.45 35 Br 79.90 53 I 126.90 64 66 70 67 68 69 Gd Но Er Tm Yb 157.25 158.93 162.50 164.93 167.26 168.93 173.04 65 Tb Dy 98 99 100 Cf Es Fm (251) (252) (257) 85 At (210) Mc (285) (289) (293) (294) Lv Ts 117 102 18. VIIIA 2 He 4.00 10 Ne 20.18 18 Ar 39.95 36 Kr 83.80 54 Xe 131.29 86 Rn (222) 118 Og (294) 71 Lu 174.97 103 No Lr (259) (260)