Element Antimony, Sb, Metalloid. Is allied on the one hand to bismuth, and on the other, to arsenic and phosphorus. It therefore forms a transition element between the metals and the non-metals, but is still essentially on the side of the metals. Its combining weight is Sb. Probably, therefore, we are dealing with a mixture of different kinds of vapour, perhaps Sb. Is known from high antiquity. Oriental countries were familiar with Antimony.

Element Bismuth, Bi, Poor Metal. For the purposes of analysis, bismuth. Bismuth readily forms alloys with other metals whereby, in accordance with the general law, the melting point sinks. The combining weight of bismuth has been determined by weighing the metal and the oxide obtained from it. It is not known with perfect certainty, and we shall take it as Bi.

Element Iodine, I, Halogene. Is allied to chlorine and bromine, and forms a third similar element. Of the three, it has the highest combining weight, amounting to 126. 86, and its properties show deviations from those of bromine chiefly in the same direction as those of bromine deviate from chlorine. Vapour is very considerable, being about nine times as great as that of air. The molar weight is 254 and the vapour has, therefore, the formula I.

Element Tellurium, Te, Metalloid. While iodine is very similar to bromine, if not in external appearance, at least in the nature of the corresponding compounds, the differences between selenium and tellurium are more pronounced, so that it has repeatedly been regarded as doubtful whether these two elements ought to be regarded as members of the same family. The combining weight of tellurium, Te. Combines with the metals to form tellurides; these correspond to the sulphides.

The element 116, Ununhexium. Is a temporary IUPAC systematic chemical element name for element 116. This name will be changes in future. Another name used for the element 116 is eka-polonium.

The element 115, Ununpentium. Is a temporary IUPAC systematic chemical element name for element 115. This name will be changes in future. Another temporary name for this element is eka-bismuth.