The d and f-Block Elements questions
808 published questions with worked solutions.
- The effect of lanthanoid contraction in the lanthanoid series of elements by and large means:
- Thermal decomposition of a Mn compound (X) at 513 K results in compound Y, MnO_2 and a gaseous product. MnO_2 reacts with NaCl...
- The electronic configurations of bivalent europium and trivalent cerium are: (atomic number: Xe = 54, Ce = 58, Eu = 63)
- Given below are two statements: Statement I: Dimethyl glyoxime forms a six membered covalent chelate when treated with NiCl_2...
- A first row transition metal in its +2 oxidation state has a spin-only magnetic moment value of 3.86 BM. The atomic number of the...
- A first row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of...
- Consider the following reaction: MnO_2 + KOH + O_2 → A + H_2O. Product 'A' in neutral or acidic medium disproportionate to give...
- The spin only magnetic moment value of the ion among Ti^ 2+ , V^ 2+ , Co^ 3+ and Cr^ 2+ , that acts as strong oxidising agent in...
- The fusion of chromite ore with sodium carbonate in the presence of air leads to the formation of products A and B along with the...
- The number of element from the following that do not belong to lanthanoids is: Eu, Cm, Er, Tb, Yb and Lu
- Among CrO, Cr₂O₃ and CrO₃, the sum of spin-only magnetic moment values of basic and amphoteric oxides is ______ × 10⁻² BM...
- Among VO₂⁺, MnO₄⁻ and Cr₂O₇²⁻, the spin-only magnetic moment value of the species with least oxidizing ability is ………………. BM...
- The elements with atomic numbers 101 and 104 belong to, respectively-
- The incorrect statements(s) among (a) – (c) is are : (a) W(VI) is more stable than Cr(VI). (b) in the presence of HCl...
- The correct electronic configuration and spinonly magnetic moment (BM) of Gd^ 3+ (Z = 64), respectively, are
- The set that contains atomic numbers of only transition elements is :
- The lanthanoid that does NOT show +4 oxidation state is
- Mischmetal is an alloy consisting mainly of:
- 'Spin only' magnetic moment is same for which of the following ions? A. Ti^ 3+ B. Cr^ 2+ C. Mn^ 2+ D. Fe^ 2+ E. Sc^ 3+ Choose the...
- The pair of lanthanoid ions which are diamagnetic is
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