The d and f-Block Elements questions
808 published questions with worked solutions.
- Fusion of MnO_2 with KOH in presence of O_2 produces a salt **W**. Alkaline solution of **W** upon electrolytic oxidation yields...
- Given below are two statements. Statement I: O_ 2 , Cu^ 2+ and Fe^ 3+ are weakly attracted by magnetic field and are magnetized...
- The 'f' orbitals are half and completely filled, respectively in lanthanide ions [Given: Atomic no. Eu, 63; Sm, 62; Tm, 69; Tb,...
- The number of statement(s) correct from the following for Copper (at. no. 29) is/are _____. (A) Cu(II) complexes are always...
- Acidified potassium permanganate solution oxidises oxalic acid. The spin-only magnetic moment of the manganese product formed...
- Which one of the lanthanoids given below is the most stable in divalent form?
- In following pairs, the one in which both transition metal ions are colourless is :
- The number of terminal oxygen atoms present in the product B obtained from the following reaction is _____. FeCr_ 2 O_ 4 + Na_ 2...
- Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : 5f electron...
- The mismatched combinations are A. Chlorophyll – Co B. Water hardness – EDTA C. Photography – [Ag(CN)_2]^- D. Wilkinson catalyst...
- How many of the following metal ions have similar value of spin only magnetic moment in gaseous state?_______ (Given : Atomic...
- Given below are two statements: Statement I : Nickel is being used as the catalyst for producing syn gas and edible fats....
- The pair(s) of diamagnetic ions is(are)
- Most common oxidation states of Ce (cerium) are
- Arrange Ce^ +3 , La^ +3 , Pm^ +3 and Yb^ +3 in increasing order of their ionic radii
- Which of the following ions has the maximum magnetic moment ?
- The radius of La^ 3+ (Atomic number of La = 57 ) is 1.06Å. Which one of the following given values will be closest to the radius...
- Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect?
- The lanthanide contraction is responsible for the fact that
- Which of the following factors may be regarded as the main cause of lanthanide contraction?
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