While it is helpful to know that many ions have the same number of electrons as a noble gas. many elements especially among the metals form ions that do not have the same number of electrons as a noble gas Use the periodic table shown below. to determine which of the following ions have the same number of electrons as a noble gas.

Check all that apply.

- N W 4 s 9 7 1A 1 2A 2 H 3 4 Li Be 11 12 Na Mg 19 20 K Ca 37 38 Rb Sr 55 56 Cs Ba 87 88 Fr Ra Metals Metalloids Nonmetals 3B 4B 3 4 21 Sc 39 Y SB 5 22 23 Ti V 71 72 73 Lu Hf Ta 68 6 40 42 41 Zr Nb Mo 103 104 105 Lr Rf Db 24 25 Cr Mn Fe 78 7 57 58 59 La Ce Pr 89 90 91 Ac Th Pa 43 44 Tc Ru 8 9 26 27 Co 106 107 108 109 Sg Bh Hs Mt 60 74 75 76 77 78 79 W Re Os Ir Pt Au Nd 92 U 61 62 Pm Sm 93 Np 10 28 Ni 45 46 47 Rh Pd Ag Pu 29 Cu 18 2B 13 11 Al 2858825 12 30 Zn 48 Cd 3A 13 5 8 Hg 31 Ga 80 81 4A SA 14 15 110 111 112 113 Ds Rg Cn 6 63 64 65 Eu Gd Tb Dy 7 N 49 50 51 In Sn Sb 6A 7A 16 17 14 15 16 Si P S 8 0 32 33 34 Ge As Se 114 115 FI 9 F 17 CI 116 Lv 35 Br 52 53 Te I 66 67 68 69 70 Ho Er Tm Yb 8A 18 82 83 84 85 86 TI Pb Bi Po At Rn 117 118 95 96 97 98 99 100 101 102 Am Cm Bk Cf Es Fm Md No 2 He 10 Ne 18 Ar 36 Kr 54 Xe O Zn+ Pb+ Te- Mn+ O Ti+