Nh Fl Mc Lv Ts Og 8 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 asterisks Alkali Alkaline Transition Post-transition Reactive Noble Unknown metal earth Lanthanide Actinide metal metal Metalloid nonmetal gas chemical metal properties