The d and f-Block Elements questions
808 published questions with worked solutions.
- Which of the following transition metal ions will have definite value of magnetic moment?
- Amongst the following, the lowest degree of paramagnetism per mole of the compound at 298 K will be shown by
- Which pair of compounds is expected to show similar colour in aqueous medium?
- Number of electrons in 3d-orbital of V^ 2+ , Cr^ 2+ , Mn^ 2+ and Fe^ 2+ are 3, 4, 5 and 6 respectively. Which of the following...
- Which of the following ions has a magnetic moment of 5.93 BM? (At. no. V=23, Cr=24, Mn=25, Fe=26)
- Match List I with List II (spin-only magnetic moment, = n(n+2) BM) and select the correct answer using the codes given below the...
- The magnetic moment , of transition metals is related to the number of unpaired electrons n as
- Which of the following types of metals form the most efficient catalysts?
- Which of the following ions is colourless in solution?
- Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is...
- Cerium (Z=58) is an important member of the lanthanides. Which of the following statements about cerium is incorrect?
- Lanthanide contraction is caused due to
- Which of the following lanthanide is commonly used?
- The actinoids exhibit more number of oxidation states in general than the lanthanoids. This is because
- Lanthanides are
- Consider the following statements. (I) La(OH)_3 is the least basic among hydroxides of lanthanides (II) Zr^ 4+ and Hf^ 4+ possess...
- Lanthanide contraction is due to increase in
- The correct order of ionic radii of Y^ 3+ , La^ 3+ , Eu^ 3+ and Lu^ 3+ is
- The most stable oxidation state of lanthanides is
- Larger number of oxidation states are exhibited by the actinoides than those by the lanthanoides, the main reason being
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