Group Illb

Of the elements in Group Illb, only boron and aluminum will be discussed here. Descriptions of the rarer metals of the group, gallium, indium and thallium, as wrell as those for the entire Ilia group and the rare-earth metals, appear in more specialized works. 

The elements of group Illb, gallium, indium, and thallium, are very rare and have small practical importance. Their principal compounds represent oxidation state - -8 thallium also forms thailous compounds, in which it has oxidation number - -1. Gallium is liquid from 29° C. its melting point, to 1700 C, its boiling point. It has found use as the liquid in quartz-tube thermometers, which can be used to above 1200° C. 

The transition elements have between 0 and 10 d electrons. The three transition series of the Periodic Table, in which the M, 4d, and 5d electronic orbitals are being successively filled, occupy rows 4, 5, and 6 of the Periodic Table. The first transition series mns from Sc (21) through Zn (30) the second from Y (39) through Cd (48) the third from La (57) to Hg (80). The orbital energies and configuration d electrons of the first and subsequent transition series result in a wide variety of oxidation states (except for the Group Illb metals, which have only the III oxidation state). 

II. FLUOROALKYL DERIVATIVES A. Groups Illb-Vb, including the lanthanides and actinides... 

Oxides of Group Illb, IVb, Vb Elements and their Quasi-binaries with... 

Species made of group Illb, IVb, Vb, VIb metals or metalloids, lanthanides and actinides ... 

Table 14. Summary of mass spectrometric studies of oxides of group Illb, IVb, Vb elements and their quasi-binaries with transition metals except those listed in Table 18. (The gaseous species or solid compounds are underlined if their enthalpies of formation or of dissociation, only gaseous species, are given)... 

Alcock, C. B., Cornish, J. B., Grieveson, P., Knudsen effusion studies of compounds of uranium and thorium with elements of Groups Illb and IVb, Thermodynamics, Proceedings of the Symposium on Thermodynamics with Emphasis on Nuclear Materials and Atomic Transport in Solids, vol. 1, pp.211-230, (1966). Cited on pages 376, 380, 493. 

Reaction with allyl chlorides 14, 10.3.4.2.1 Reaction with Group IllB halides 14,... 

B metal of group Illb, n number of hydride atoms, D substituent other than hydrogen) are either stable or unstable compounds. Strouf and Wold C2863 used 28 variables derived from structural data for the classification of the stability. An averaged predictive ability of 80 % was obtained with the SIMCA method. 

The meroditerpenes of Group Illb have a regular ter-penic chain either with a cydopentane (amentane skeleton) or with a bicylic system (balearane and cystalgerane skeletons). As before, the presence of additional oxygenated cycles was observed we present only a few examples of each of these carbon skeletons. 

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