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Q. Explain about Molecular orbital theory?
Molecular orbital theory is a completely different approach. It starts with identifying the metal orbitals and the ligand orbitals (hybridised) which have the correct symmetry and energies for combination to yield molecular orbitals. The total electrons from the ligands and metal ion are placed into these molecular orbitals and the bond order, which is a measure of the covalency. is determined. Once the energy sequence of molecular orbitals in a complex is known. The properties of the complex can be all explained. It does not start with any assumption regarding the type of bond involved in the complex; rather it comes out as a natural consequence of the theory. Further, it IS much more comprehensive yet the theory has not become very popular. The reason for this is that the quantum mechanical calculations involved are too tedious and many a time cannot be solved. We shall not go into the details of this theory but would like to emphasise that this is the best and comprehensive approach; in all those cases where precise calculations have been possible, the results are in almost 'perfect agreement with the experimental observations.
Vacancies A vacancy is a lattice position that is vacant due to the atom is missing. It is formed when the solid is formed. Vacancies are simply empty atom site.
Discuss hartree-fock self consistent field theory . what are its demerit.
Q. In 1982, the International Union of Pure and Applied Chemistry recommended that the value of the standard pressure p o be changed from 1 atm to 1 bar. This change affects the
Chemical Kinetics of the Peroxodisulfate Ion The peroxodisulfate ion is one of the strongest oxidants that are called, although the oxidation reaction is relatively slow.
i need to know the answer for dis-advantage of scale and sludge
Match the compounds below with the type of bonding each predominately exhibit. Question 3 options: NaCO3 NaBr SOCl2 CH4 1. ionic bonding 2. covalent bonding
The energy released when one mole of ionic crystal is produced by the combination of the corresponding gaseous (+ve) and (-ve) ions brought from infinite distance is known as latti
The base "G" in DNA is guanine. a 15 ug sample of guanine in excess oxygen resulting in 21.84 ug of CO2, 4.47 ug of H2O, and 22.83 ug of NO2. How many grams of carbon does 15 ug
1. List possible manipulation errors that might contribute to the following errors in results: 1) obtaining a significantly larger amount of NaCl than was present in the original
Physical properties of Formic Acid (a) Formic Acid is a pungent smelling and colourless liquid. (b) Formic Acid melts at 8.4° C and boils at 100.5° C . (c) Formic Acid i
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