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Explain the following observations:
(i) Generally there is an increase in density of elements from titanium (Z = 22) to copper (z =29) in the first series of transition elements.
(ii) Transition elements and their compounds are generally found to be good catalysts in chemical reactions.
The K sp of the phosphate fertilizer CaHPO 4 .2 H2O is 2.7 x 10 -7 at 25 o C. What is the molar concentration of a saturated solution? What mass of this compound will dissolve
why LiF and CsI are solibile in water but LiI and CsF are less solibility in water
Draw the important resonance contributors for the benzenoium intermediate in the bromination of aniline and explain why ortho, para substitution predominates ?
Streptomycin: It was discovered in the year 1944 by Waksman. Streptomycin is successful against tuberculosis. It is as well used for other general infections such as ears, thro
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
how can you prepare 20%(v:v),150ml ethanol solution
list the elements that have all 3 properties: lustre , malleabbility and conductivity
Binary phase diagrams of two component systems are usually Two dimensional plots of temperature and composition.
electrode system
The electronic configuration 1s 2 , 2s 2 , 2p 1 x , 2p 1 z : (1) Oxygen (2) Nitrogen (3) Hydrogen (4) Fluorine Ans: Nitrogen
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