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Q. Complexation Behaviour of the f-block?
Ions of actinide and lanthanide elements have a strong tendency to form complexes with a variety of oxygen and nitrogen donor ligands. Perhaps, because of their comparatively higher charge to size ratio, the actinide ions have a greater tendency to form complexes than the lanthanides. Also, because of the existence of a large number of oxidation states, the complexation behaviour of actinides is more varied. The lanthanide and actinide ions form the most stable complexes with chelating ligands such as oxalic acid, tartaric acid, citric acid, nitric acid, ethylenediamine tetraacetic acid (EDTA) and 0-diketones. In these complexes the metal ions have very high coordination numbers. For case, the coordination number of the metal ion in [Th(acac)4]. [Ce(N03)4.(OPPh3)2] and [Ce(N03)6]2- is 8, 10, 12, respectively. In these complexes, the acetyl acetonate (acac) and the nitrate ligands are operating as bidentate ligands occupying two coordination sites around the metal ion. These metal ions form water soluble complexes with citric acid, tartaric acid and EDTA. The formation of water soluble complexes with these ligands facilitates separation of the metal ions by ion exchange chromatography.
titration curve or eak acid and eak base
Q. What do you mean by Solids Non-Fat? Solid non-fat is an important criterion of milk selection for further processing. Milk solids non-fat would include the nitrogenous subst
what are the equacyions of Dunstan''s test ???
Freons - Halogen Derivatives The chloro fluoro that is derivatives of methane and ethane are called freons. Some of the derivatives are: CHF 2 Cl (monochlorodifluoromethane)
Assignment
How to know prefrential discharge for ions
What are two factors that contribute to the acidity of 2-naphthol
Factor of affecting conductions
Acetic acid (HAc) is generated by the addition of 10% excess sulfuric acid to calcium acetate (Ca(Ac) 2 ) (stream 1 compared to stream 3). The flow diagram is shown below.
which one will be chosen as cathode, Ag/Ag+ or Ag/Agi/i
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