The d and f-Block Elements questions
808 published questions with worked solutions.
- The radius of La^ 3+ (atomic number of La = 57) is 1.06 Å. Which one of the following given values will be closest to the radius...
- The lanthanide contraction is responsible for the fact that
- In context of the lanthanoids, which of the following statements is not correct?
- Most common oxidation states of Ce (cerium) are
- Which belongs to the actinides series?
- Statement 1: Europium(II) is more stable than cerium(II). Statement 2: Cerium salts are used as a catalyst in petroleum cracking.
- Statement 1: Magnetic moments values of actinides are lesser than the theoretically predicted values. Statement 2: Actinide...
- Statement 1: Chromium is hard but mercury is soft. Statement 2: Chromium is a 3d transition element.
- Transition metal used for making joins in jewellery is
- Which of the following has the maximum number of unpaired d-elements?
- Which of the following is not a property of transition elements?
- Cuprous ion is colourless, while cupric ion is coloured because
- Which of the following ions has the highest magnetic moment?
- The transition elements are more metallic than the representative elements because they have
- Which one of the following is a diamagnetic ion?
- Zinc does not show variable valency like d-block elements because
- The catalytic activity of the transition metals and their compounds is ascribed to their
- In which of the following metallic bond is strongest?
- Of the ions Zn^ 2+ , Ni^ 2+ and Cr^ 3+ , (atomic number of Zn=30, Ni=28, Cr=24)
- Which of the following may be colourless?
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