InterviewSolution
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InterviewSolution
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Explain the following observations : (i) Many of the transition elements are known to form interstitial compounds . (ii) There is a general increase in density from titanium (Z =22) to copper (Z = 29). (iii) The members of the actinoid series exhibit a larger number of oxidation states than the corresponding members of the lanthanoid series. |
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Answer» (i) Many of the transition elements are known to form interstitial compounds , they are capable of entrapping small atoms like H , C or N in the interstitial sites in their crystals lattice. (ii) There is a general increase in density from titanium (Z =22) to copper ( z = 29) . On moving from titanium to copper in general atomic mass increases where as atomic size decreases , therefore density increases in general . (iii) The members of the actinoid series exhibit a larger number of oxidation states than the corresponding members of the lanthanoid series because in actinoids 5f , 6 d and 7 s subshells are of comparable energies . |
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