These elements are found in group 13 xiii of the p block in the periodic table of elements aluminum gallium indium and thallium are metallic they each have three electrons in their outermost shell a full s orbital and one electron in the p orbital with the valence electron configuration ns 2 np 1 the boron family adopts oxidation . Group 13 is sometimes referred to as the boron group named for the first element in the family these elements are not surprisingly located in column 13 of the periodic table this group includes boron aluminum gallium indium thallium and ununtrium b al ga in tl and uut respectively these elements all have three valence electrons. None of the group 13 elements reacts directly with hydrogen and the stability of the hydrides prepared by other routes decreases as we go down the group in contrast to boron the heavier group 13 elements form a large number of complexes in the 3 oxidation state. Get this from a library aluminum and the elements of group 13 n saunders provides an introduction to elements atomic structure and the periodic table discusses the discovery and properties of aluminum and the elements of group 13 and looks at the many uses of aluminum
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