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Q. Define the Spectrochemical series?
Spectrochemical series helps us in renationalising the differences in the spectral properties of complexes. As the strength of the crystal field created by the ligands & increases, the frequency of absorption of light by the complex would also increase. Absorption of high frequency radiations means that light of lower frequency will be transmitted and will be responsible for the particular dour of the complex. It thus explains as to why the colours of a series of complexes of one particular metal ion, in the same oxidation state having the - same geometry, could be different. For example, the following four octahedral compounds of Co3 ion show different colours which are in accordance with spectrochemical series.
Complex D0 (em-1) colours
[Co (C2O4)3]3- 18,000 Dark green
[Co (H2O)6]3+ 18.200 Blue
[Co (NH3)6]3 + 22.900 Golden-brown
[Co (CN)6]3 - 33.500 Yellow
Explain ,Why NH 4 + ion doesnot form complexes? solution) NH 4 + Ion does not act as ligand because nitrogen atom has no lone pair of electrons which it can donate to metal a
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Q. Name the harmful microorganisms found in food? The harmful microorganisms found in food are Salmonella species, E. coli, A. flavus, C. botulimum and S. aureus.
Which sample is better to use, bigger sample or smaller sample?
application of electromeric effect
Determine the Coordination number (CN) of HCP In HCP unit cell, the base centered atom touches six corner atoms in the similar plane, three atoms in a plane above and thre
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