Despite the organic chemistry-guided expansion of the chemical space, there was also some differentiation of non-organogenic element similarities (Fig. ), as is the case of Ru, which reached high diversity of its compounds and increased their numbers (Fig. ). Os also enlarged the number of their compounds and Ga and In increased the diversity and number of their substances (Fig. ). This led to the appearance of the similarity Ru-Os, as well as Ga-In, as part of {B, Al, Ga, In, Au} (Fig. ). {Al, Ga, In} is today a family of the periodic system (Fig. ). A representative periodic table of the system provided by the chemical space of these years is found in Fig. .