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Quantitative elemental analysis:
The instrument used for AFS consists of atom reservoir that might be a flame or a furnace etc., a basic source emitting the features absorption radiation of the element being determined, a monochromator, detector, signal processor and readout device. The basic source is commonly a hollow cathode lamp or a tuned laser.
Atomic fluorescence spectrometry is meaningful in study of electronic structure of atoms and in quantitative elemental analysis. Applications involves determination of Pb, Hg, Cd, As (III), As (V) Sb(III), Sb(V), Se(IV,VI), etc within clinical, environmental, geological and metallurgical, pharmaceutical and petrochemical samples. The major benefits of fluorescence measurements as compared to absorption measurements are the greater sensitivity as the signal has extremely low background and lesser interferences. It does suffer from the interference from matrix emission, oxide creation and scattering because of organic solvents but not as severely as the other atomic spectrometric methods.
Orbital angular momentum for a d-electron is: (1) 6h/ 2Π (2) √6/ 2 Π (3) 12 h/ 2Π (4) √12h/ 2Π Ans: √6/ 2 Π
what is inert pair effect
which compounds will dissolve in alkaline solution after it has undergone reaction with hinsberg reagent
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cis-2-butene is a symmetrical alkene Because cis-2-butene is a symmetrical alkene, it reacts to give the similar product in either oxymercuration- reduction or hydroboration-ox
The phosphate of a metal has the formula MPO4 .The formula of its nitrate will be: (1) MNO 3 (2) M 2 (NO 3 ) 2
Bond-line Notation of organic compounds Occasionally, the bonds in between carbon atoms are denoted by lines. For instance, n -hexane has a continuous chain of six carbon atom
Polyhydroxy butyrate (PHB) Polyhydroxy butyrate or PHB is acquired from hydroxy butyric acid (3-hydroxy butanoic acid)
Co-ordination covalent bond is produced by the mutual sharing of pair of electrons among two atoms contributed by only one of the combining atoms.
The complete explanation
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