Periode 7

87 Fr Francium 223.02 88 Ra Radium 226.025 89 Ac Actinium 227.028 90 Th Thorium 232.038 91 Pa Protactinium 231.036 92 U Uran 238.029 93 Np Neptunium 237.048 94 Pu Plutonium 244.064 95 Am Americium 243.061 96 Cm Curium 247.07 97 Bk Berkelium 247.07 98 Cf Californium 251.08 99 Es Einsteinium 252.083 100 Fm Fermium 257.095 101 Md Mendelevium 258.098 102 No Nobelium 259.101 103 Lr Lawrencium 266.12 104 Rf Rutherfordium 267.122 105 Db Dubnium 268.126 106 Sg Seaborgium 269.128 107 Bh Bohrium 270.133 108 Hs Hassium 269.134 109 Mt Meitnerium 277.154 110 Ds Darmstadtium 282.166 111 Rg Roentgenium 282.169 112 Cn Copernicium 286.179 113 Nh Nihonium 286.182 114 Fl Flerovium 290.192 115 Mc Moscovium 290.196 116 Lv Livermorium 293.205 117 Ts Tenness 294.211 118 Og Oganesson 295.216