element tables

Introduction - The long form of the periodic table is based upon the filling of a particular shell and has been accordingly divided into four blocks i.e. 's', 'p', 'd' and 'f' blocks. The 's' block elements involve the filling of 's' subshell. This block includes the elemen..

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Nuclear reactions involving the bombardment technique by different particles have been used to synthesise artificial elements such as Technetium, Astatine and Transuranium. (Z > 92) which follow uranium in the periodic table. The nuclear reactions used to synthesise some of thes..

Element Symbol Atomic number Electronic configuration (or Electron arrangement) KLMN Hydrogen H 1 1 Helium He 2 2 Lithium Li 3 2,1 Beryllium Be 4 2,2 Boron B 5 2,3 Carbon C 6 2,4 Nitrogen N 7 2,5 Oxy..

Name and Symbol Atomic no.(Z) Mass no.(A) Sub Atomic Particals Electronic configuration Valency Metal/Non-metal or Noble gases and Nature of element K L M N Hydrogen (H) 1 1 p = 1 e = 1 n = 0 1 ±1 ..

Physical Characteristics of Group 17 Elements - The important physical properties of group 17 elements are given in table. These are discussed bel..

Physical Characteristics of Group 13 Elements - The important physical constants of group 13 elements arc given in table and their physical characteristics are discussed bel..

Oxygen, sulphur, selenium, tellurium and polonium constitute the group 16 of the periodic table of elements. The first four elements are collectively called CHALCOGENS. The name derives from the Greek word for bronze and points to the association of sulphur and its con..

Introduction - The p-block contains several elements of great social and economic importance as well as chemical interest. Examples include the use of aluminium as a structural material, the importance of silicon and germanium as semiconductors, and the use of sulphur, phosphorus and nitr..