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Group 13 of the periodic table consists of the elements boron (B), aluminium (Al), gallium (Ga), indium (In) and thallium (Tl). Except boron, which is classified as a non-metal, all other elements of this group are meta..

Group 13 Elements (Boron Family) - Introduction - Group 13 of the periodic table consists of the elements boron (B), aluminium (Al), gallium (Ga), indium (In) and thallium (Tl). Except boron, which is classified as a non-metal, all other elements of this group are meta..

These compounds contain hydride ions coordinated to metal ions to form Complex hydrides. They are common in both the transition and non-transition metals. Common examples of complex hydrides are those formed by the elements of group III A such as B, Al, Ga, etc. As an illustration, the p..

. Consequently, the electron becomes less and less tightly held by the nucleus as we move down the group. Hence, ionization energy decreases down the grou..

Al, Ga, In and Tl react with halogens to give binary halides. All the halides of group 13 elements are known except Tl(III) iodide. The fluorides are ionic and have high melting points. The chlorides, bromides and iodides are essentially covalent compounds with low melting points. The bo..

Alkali borohydrides are used as reducing agents. (iv) Diborane reacts with ammonia to give borazine at 450 ..

.1 - Earth structure according to (a) Goldschmidt (b) Kuhn and Rittman Layer Elements present Metallic core (Siderophil) Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Re, Os, Ir, Pt, Au Sulphide layer (Chalcophil) P, S, Zn, Ga, Ge, As, Se, Cd, In, Sn, Sb, Te, Hg, Tl, Pb, Bi Silicate layer (Lithophi..

Fig: 10.1 - Earth structure according to (a) Goldschmidt (b) Kuhn and Rittman Layer Elements present Metallic core (Siderophil) Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Re, Os, Ir, Pt, Au Sulphide layer (Chalcophil) P, S, Zn, Ga, Ge, As, Se, Cd, In, Sn, Sb, Te, Hg, Tl, Pb, Bi Silicate layer (L..

The grouping of elements with similar properties together and the separation of elements with dissimilar properties is known as classification of elements. The table, which classifies elements on the basis of their properties, is called the periodic table. The earliest classification was into ..

Summary - The grouping of elements with similar properties together and the separation of elements with dissimilar properties is known as classification of elements. The table, which classifies elements on the basis of their properties, is called the periodic table. The earliest classification was ..