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Give special emphasis on the following points: 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements What can be inferred from the magnetic moment values of the following complex species? Example Magnetic Moment (BM) 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Comment on the statement that elements of the first transition series possess many properties different from those of heavier transition elements. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Write the electronic configurations of the elements with the atomic numbers 61, 91, 101, and 109. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Compare the chemistry of the actinoids with that of lanthanoids with reference to: (i) electronic configuration (ii) oxidation states and (iii) chemical reactivity. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Name the members of the lanthanoid series which exhibit +4 oxidation state and those which exhibit +2 oxidation state. Try to correlate this type of behavior with the electronic configurations of these elements. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Use Hund's rule to derive the electronic configuration of Ce^3+ ion and calculate its magnetic moment on the basis of 'spin-only' formula. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Which is the last element in the series of actinoids? Write the electronic configuration of this element. Comment on the possible oxidation state of this element. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements The chemistry of the actinoid elements is not so smooth as that of the Lanthanoids. Justify this statement by giving some examples from the oxidation state of these elements. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements: 29, 59, 74, 95, 102, 104. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements What are alloys? Name an important alloy which contains some of the lanthanoid metals. Mention its uses. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Indicate the steps in the preparation of: (i) K2Cr2O7 from chromite ore. (ii) KMnO4 from pyrolusite ore. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Give examples and suggest reasons for the following features of the transition metal chemistry: (i)The lowest oxide of transition metal is basic, the highest is amphoteric/acidic. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Calculate the number of unpaired electrons in the following gaseous ions: Mn^3+, Cr^3+, V^3+ and Ti^3+. Which one of these is the most stable in aqueous solution? 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why? 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements What is meant by 'disproportionation'? Give two examples of disproportionation reaction in aqueous solution. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements How would you account for the following: (i) Of the d^4 species, Cr^2+ is strongly reducing while manganese(III) is strongly oxidising. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Compare the chemistry of actinoids with that of the lanthanoids with special reference to: 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Describe the preparation of potassium dichromate from iron chromite ore. What is the effect of increasing pH on a solution of potassium dichromate? 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements How is the variability in oxidation states of transition metals different from that of non-transition metals? Illustrate with examples. 3 years ago Daksh sohum class 12 cbse ncert the d block elements the f block elements Page 1 / 5 1 2 3 4 5 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved
