NEET UG d- and f-Block Elements — practice questions
28 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG d- and f-Block Elements in the app →The general outer electronic configuration of d-block elements is:The electronic configuration of Cr (Z = 24) is:Why are Zn, Cd and Hg not regarded as transition elements?The melting points of transition metals rise to a maximum at d⁵ configuration. This is because:Why is the enthalpy of atomisation of Zn (126 kJ/mol) the lowest in the 3d series?The 2nd and 3rd transition series (4d and 5d) have very similar atomic radii because of:Which 3d transition element exhibits the largest number of oxidation states?The most stable oxidation state of Sc is:E° values for Mn³⁺/Mn²⁺ (+1.57 V), Co³⁺/Co²⁺ (+1.97 V) and Fe³⁺/Fe²⁺ (+0.77 V). Which is the strongest oxidisiThe spin-only magnetic moment μ in BM for n unpaired electrons is given by:Calculate the spin-only magnetic moment of a divalent ion of Mn (Z = 25):Which of the following ions is colourless and diamagnetic?
Transition metal ionInterstitial compounds (e.g., TiC, Fe₃H, VH₀.₅₆) of transition metals have:The oxidation state of chromium in both CrO₄²⁻ and Cr₂O₇²⁻ is:In acidic solution, dichromate ion (Cr₂O₇²⁻) acts as a strong oxidising agent. The half-reaction is:Potassium dichromate (K₂Cr₂O₇) is prepared from which ore?In KMnO₄, the oxidation state of Mn is:Disproportionation occurs when:The most common oxidation state of lanthanoids is:Lanthanoid contraction is the:A major consequence of lanthanoid contraction is:Which lanthanoid is well known to exhibit the +4 oxidation state in aqueous solution as a strong oxidising ageActinoids in general have which characteristic that distinguishes them from lanthanoids?The general electronic configuration of actinoids is:Which of the following ions is NOT coloured in aqueous solution?All transition metal ions form complexes more readily than main-group metal ions. Which is the LEAST importantAmong Sc²⁺, V³⁺, Mn²⁺ and Zn²⁺, which is paramagnetic with **5** unpaired electrons?