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Give reason:
(i) Transition elements exhibit higher enthalpies of atomisation.
(ii) In aqueous solution, $Cr ^{2+}$ is stronger reducting agent than $Fe ^{2+}$.
(iii) The second ionisation enthalpy of Cu is higher then $Z n$.
→(i) Transition elements exhibit higher enthalpies of atomisation.
(ii) In aqueous solution, $Cr ^{2+}$ is stronger reducting agent than $Fe ^{2+}$.
(iii) The second ionisation enthalpy of Cu is higher then $Z n$.
Why vitamin D, E and K compounds are essential for us? Describe their important sources.
Write the formulae of the following coordination compounds:
- Tetraamminediaquacobalt(III)chloride .
- Tris (ethane-1,2-diamine)chromium(III)chloride.
Answer thefollowing:
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(At. no. of Co = 27)
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A solution contains 1g mol. each of p-toluene diazonium chloride and pnitrophenyl diazonium chloride. To this 1g mol. of alkaline solution of phenol is added. Predict the major product. Explain your answer.
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- Draw the structures of geometrical isomers of the following coordination complexes:
[Co(NH3)3Cl3] and [CoCl2(en)2]+.
(en = ethylenediamine and atomic number of Co is 27).
What is organo metallic compound? Explain grignard reagent.
Define the following terms:
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