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Two or more different compounds having the same formula are called isomers. Two types of isomerism are known among coordination compounds. These are:- 1. Stereo Isomerism a) Geometrical isomerism b) Optical isomerism 2. Structural isomerism a) Coordination isomerism b) Ionisation isomerism c) Hydrate isomerism 1. StereoisomersStereoisomers have the same atoms, same sets of bonds, but differ in the relative orientation of these bonds. Geometric isomers are possible for both square planar and octahedral complexes, but not tetrahedral. Optical isomers are possible fo
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submitted by johri_anshuman (1188 m) on 28 Aug 2007 22:29:43 IST (4 comments 561 views)
The Structure of the Atom By the late nineteenth century, most people had accepted Dalton's proposal of 1808 that matter was made of atoms. Dalton "proved" his theory with a number of assumptions, each of which is either factually wrong or was used in a logically inconsistent manner. Nonetheless opposition from critics such as Mach, who never believed in atoms, was largely ignored. Throughout the nineteenth century atomism became an idea that came to dominate thought in a number of fields, including political science, sociology, psychology, biology and more. Then, in 1897 J.J. Thomson discovered the electron. He determined that these electrons
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submitted by johri_anshuman (1188 m) on 16 Nov 2007 10:50:06 IST (21 comments 535 views)
Hi friends these materials will be handy for the begginers.......... So plz have a look WRITING IONIC EQUATIONS FOR REDOX REACTIONS This page explains how to work out electron-half-reactions for oxidation and reduction processes, and then how to combine them to give the overall ionic equation for a redox reaction. This is an important skill in inorganic chemistry. Don't worry if it seems to take you a long time in the early stages. It is a fairly slow process even with experience. Take your time and practice as much as you can. Electron-half-equations What is an electron-half-equation? When magnesium reduces hot copper(II) oxide to copper, the ionic equ
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submitted by swashata4iit (880 m) on 21 Sep 2007 17:16:08 IST (12 comments 233 views)
Colligative Properties Colligative properties are properties of solutions that depend on the number of particles in a given volume of solvent and not on the mass of the particles. Colligative properties include: lowering of vapour pressure; elevation of boiling point; depression of freezing point; osmotic pressure. Measurements of these properties for a dilute aqueous solution of a non-ionized solute such as urea or glucose can lead to accurate determinations of relative molecular masses. Alternatively, measurements for ionized solutes can lead to an estimation of the percentage of ionization taking place. Vapor pressure The relationship betwe
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submitted by james (43 m) on 23 Sep 2007 21:44:52 IST (2 comments 124 views)
