The d and f-Block Elements questions
808 published questions with worked solutions.
- Lanthanoid contraction, the unique feature in the chemistry of lanthanoids, is basically
- Misch metal is
- Consider the following statements : I. La(OH)_3 is the least basic among hydroxides of lanthanides. II. Zr^ 4+ and Hf^ 4+ possess...
- The radius of La^ 3+ (atomic number of La = 57 ) is 1.06 . Which one of the following given values will be closest to the radius...
- Lanthanoid contraction is caused due to
- Match the Column and choose the correct option from the codes given below : Column I (Name) : A. Erbium B. Neodymium C. Ytterbium...
- Which of the following has got incompletely filled f-subshell?
- The first ionisation enthalpies of the lanthanoids are around ... A ..., the second about ...B... comparable with those of...
- Knowing that the Chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is...
- The spin only magnetic moment of Fe^ 3+ ion (in BM) is approximately
- Within each transition series, the oxidation states
- 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...
- The catalytic activity of the transition metals and their compounds is described to
- Which pair of compounds is expected to show similar colour in aqueous medium ?
- Match the following columns. Column I : A. Lanthanoid oxide B. Lanthanoid which can show +2 oxidation state C. Magnesium based...
- Which of the following statement(s) is/are correct? I. CuS is white in colour. II. KMnO_4 exists as dark purple black prismatic...
- Cuprous ion is colourless, while cupric ion is coloured because
- The 3d-metal ions are generally paramagnetic in nature because
- The calculated magnetic moment of a divalent ion of an atom with atomic number 24 in aqueous solution is
- Which of the following statement(s) is/are correct? I. In acidic solution dichromate ions are converted to chromate ions. II. An...
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