扩展元素周期表
包括g區的元素周期表 > 布克哈德·弗里克模型

1973年布克哈德·弗里克（Burkhard Fricke）使用相對論性Hartree-Fock-Slater程序計算提出了另一種扩展元素周期表：
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 1 H 氢 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 He 氦 |
| 2 | 3 Li 锂 | 4 Be 铍 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 B 硼 | 6 C 碳 | 7 N 氮 | 8 O 氧 | 9 F 氟 | 10 Ne 氖 |
| 3 | 11 Na 钠 | 12 Mg 镁 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13 Al 铝 | 14 Si  | 15 P 磷 | 16 S 硫 | 17 Cl 氯 | 18 Ar 氩 |
| 4 | 19 K 钾 | 20 Ca 钙 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21 Sc 钪 | 22 Ti 钛 | 23 V 钒 | 24 Cr 铬 | 25 Mn 锰 | 26 Fe 铁 | 27 Co 钴 | 28 Ni 镍 | 29 Cu 铜 | 30 Zn 锌 | 31 Ga 镓 | 32 Ge 锗 | 33 As 砷 | 34 Se 硒 | 35 Br 溴 | 36 Kr 氪 |
| 5 | 37 Rb 铷 | 38 Sr 锶 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 39 Y 钇 | 40 Zr 锆 | 41 Nb 铌 | 42 Mo 钼 | 43 Tc 锝 | 44 Ru 钌 | 45 Rh 铑 | 46 Pd 钯 | 47 Ag 银 | 48 Cd 镉 | 49 In 铟 | 50 Sn 锡 | 51 Sb 锑 | 52 Te 碲 | 53 I 碘 | 54 Xe 氙 |
| 6 | 55 Cs 铯 | 56 Ba 钡 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 57 La 镧 | 58 Ce 铈 | 59 Pr 镨 | 60 Nd 钕 | 61 Pm 钷 | 62 Sm 钐 | 63 Eu 铕 | 64 Gd 钆 | 65 Tb 铽 | 66 Dy 镝 | 67 Ho 钬 | 68 Er 铒 | 69 Tm 铥 | 70 Yb 镱 | 71 Lu  | 72 Hf 铪 | 73 Ta 钽 | 74 W 钨 | 75 Re 铼 | 76 Os 锇 | 77 Ir 铱 | 78 Pt 铂 | 79 Au 金 | 80 Hg 汞 | 81 Tl 铊 | 82 Pb 铅 | 83 Bi 铋 | 84 Po 钋 | 85 At  | 86 Rn 氡 |
| 7 | 87 Fr  | 88 Ra 镭 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 89 Ac 锕 | 90 Th 钍 | 91 Pa 镤 | 92 U 铀 | 93 Np 镎 | 94 Pu 鈽 | 95 Am 镅 | 96 Cm 锔 | 97 Bk  | 98 Cf 锎 | 99 Es 锿 | 100 Fm 镄 | 101 Md 钔 | 102 No 锘 | 103 Lr 铹 | 104 Rf  | 105 Db  | 106 Sg  | 107 Bh  | 108 Hs  | 109 Mt  | 110 Ds  | 111 Rg  | 112 Cn  | 113 Nh  | 114 Fl  | 115 Mc  | 116 Lv  | 117 Ts  | 118 Og 鿫 |
| 8 | 119 Uue | 120 Ubn | 121 Ubu | 122 Ubb | 123 Ubt | 124 Ubq | 125 Ubp | 126 Ubh | 127 Ubs | 128 Ubo | 129 Ube | 130 Utn | 131 Utu | 132 Utb | 133 Utt | 134 Utq | 135 Utp | 136 Uth | 137 Uts | 138 Uto | 139 Ute | 140 Uqn | 141 Uqu | 142 Uqb | 143 Uqt | 144 Uqq | 145 Uqp | 146 Uqh | 147 Uqs | 148 Uqo | 149 Uqe | 150 Upn | 151 Upu | 152 Upb | 153 Upt | 154 Upq | 155 Upp | 156 Uph | 157 Ups | 158 Upo | 159 Upe | 160 Uhn | 161 Uhu | 162 Uhb | 163 Uht | 164 Uhq |  |  |  |  |  |  |
| 9 | 165 Uhp | 166 Uhh |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 167 Uhs | 168 Uho | 169 Uhe | 170 Usn | 171 Usu | 172 Usb |
元素分区
| 0 | 1 | 2 | 3 | 4 |
| --- | --- | --- | --- | --- |
|   s區元素 |   p區元素 |   d區元素 |   f區元素 |   g區元素 |
以上所有理論上存在但並未發現的元素均根據IUPAC元素系統命名法命名，而該名將會一直沿用直到這個元素被發現、證實，並被賦予正式名稱。
g區在元素周期表中的位置（位于f區的左邊、右邊或中間）仍然是不肯定的。上表所示的位置是建于構造原理在更高原子序的元素還成立的前提上，但這假設不一定正確。對於118號元素，軌域1s、2s、2p、3s、3p、3d、4s、4p、4d、4f、5s、5p、5d、5f、6s、6p、6d、7s及7p應會被佔據，其餘則為空。第八周期的元素軌域預測會以8s、5g、6f、7d、8p的順序填滿。然而，從大約122號元素開始，電子層間過於接近，使計算電子的位置時發生問題。例如，經過計算，165號及166號元素（如果存在）會佔據9s軌域，而把8p軌域留空。
而布克哈德·弗里克模型的預測最高可以推廣到184號元素在週期表上的位置。