Boron Family: The elements Boron (B), Aluminium (Al), Gallium (Ga), Indium (In) and Thallium (Tl) together constitute group 13 of the long form of the periodic table and are known as members of Boron family. Aluminium is the most abundant element in its group and is the 3rd most abundant element found in the earth’s crust after oxygen and silicon. General Trends in Physical Properties of Boron Family: (i) Electronic Configuration- The general outer electronic configuration of these elements is ns2 np1 (n = 2 to 6) which shows that these elements have three electrons in the valence shell; one in … Continue reading Group 13 Elements (Boron Family)