Chapter 13 The elements of boron family 13.1 Outline on boron family 13.2 The elemental substances of boron family 13.3 The compounds of boron -*13.4 The compounds of aluminumChapter 13 The elements of boron family *13.4 The compounds of aluminum 13.3 The compounds of boron 13.2 The elemental substances of boron family 13.1 Outline on boron family