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THE p-BLOCK ELEMENTS 307 UNIT 11 After studying this unit, you will be able to • appreciate the general trends in the chemistry of p-block elements; • describe the trends in physical and chemical properties of group 13 and 14 elements; • explain anomalous behaviour of boron and carbon; • describe allotropic forms of carbon;
Group 13 elements (Boron Family) are the 1st group of p-block. Elements: Boron, Aluminium, Gallium, Indium, Thallium. Understand their properties, Behaviour and Compounds formed.
classify elements into s, p, d, f blocks and learn their main characteristics; recognise the periodic trends in physical and chemical properties of elements; compare the reactivity of elements and correlate it with their occurrence in nature; explain the relationship between ionization enthalpy and metallic character;
24 Ιαν 2023 · Ans: The physical properties of Group \(13\) elements are as follows: i. Atomic and Ionic radii: The atomic and ionic radii of group \(13\) elements are smaller than those of group \(2\) elements. ii. Density: Elements in group \(13\) have higher densities than elements in group \(2\) due to smaller atomic and ionic radii. iii.
Modern Periodic Law: The physical and chemical properties of elements are the periodic functions of their atomic numbers. Types of Elements: s-, p-, d- and f- blocks. MAIN GROUP ELEMENTS/ REPRESENTATIVE ELEMENTS: The s- and p- block elements are called main group elements or representative elements.
26 Απρ 2022 · It includes the elements present in the groups from 13 to 18. And is very important to learn more about the periodic table. It also includes the physical and chemical properties of elements. And also uses and properties of some of its compounds.
• describe the trends in physical and chemical properties of group 13 and 14 elements; • explain anomalous behaviour of boron and carbon; • describe allotropic forms of carbon;
