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Q. What is Pairing energy explain?
Pairing energy, P, depends mainly on the electronic distribution of the central metal ion and its value can be obtained from the atomic spectra of the element. The D0 obtained from the molecular spectra of the complex. It depends on the metal ion, ligand and the geometry of the complex. Once these two values are known for any complex, you will know whether it will be high spin or low spin and you will also be able to calculate the CFSE. Table 14.6 gives the pairing energy values ford to d7 ions of first row transition elements as well as values for a few complexes. In dl,d 2, d3, d8. d9 and dl0 systems only one configuration each is possible.
proeprties of glucose
Q. Discuss the EDTA method of determining hardness of water. OR What is hardness of Water? How it is determined by EDTA
i need email tutor who has good background on geopolymer cement to explain it for me such as the geopolymerisation process and fly ash composition by skype or Yahoo or hotmail i ne
Describe a method that could be used to separate the components of the following a) Sand and iron filings b) Sawdust and lead pellets c) Salt and glass particles d) Silt (water and
There are two type of vitamines 1.water soluble 2.fat soluble water soluble vitamines are B complex and C vitamines vitamine c is soluble in water so dissolve in water and ca
Ions which have the same electronic configuration are those of: (1) Lithium and sodium (2) Sodium and potassium (3) Potassium and calcium (4) Oxygen and chlorine An
50ml of 0.1M NH 4 OH ,25ml NH 4 Cl weere used to make a buffer . what is the PH is if Pk b is 4.8? Solution) The given buffer is a base buffer [NH4OH] =[(50*0.1)/75] [NH4Cl] =[(
Explain the steps involved in the preparation of either potassium dichromate from sodium chromate or potassium permanganate from manganese dioxide.
2Zns + 3O 2 ---------> 2ZnO + 2SO 2 ZnCO 3 -------------> ZnO + CO 2 ZnO +C ------> Zn +CO ZnO + CO -----------> Zn + C0 2
We performed a titration in the lab with mock gastric juice and potassium hydroxide. We titrated to end point and then to another colour change and noted both the volumes. We are n
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