CBSE Class 11 (Science) d- and f-Block Elements — practice questions
12 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) d- and f-Block Elements in the app →The lanthanoid series is built up by the filling of which orbitals?Scandium (Z = 21) counts as a transition element because its ground-state atom has what?What accounts for the high melting points of transition metals?Why do 4d and 5d metals often form metal-metal bonds?Why do same-charge ions shrink across a d series?Zirconium and hafnium have almost the same atomic radius. Which effect causes this?Why is the third IE of Fe lower than that of Mn?Why does first ionisation enthalpy rise only slightly across the 3d series?Low oxidation states such as zero are stabilised by ligands with what property?Why is E(Ni2+/Ni) more negative than expected?Both Cr2+ and Mn3+ are d4, yet Cr2+ is reducing. What makes Cr2+ reducing?Why is the E value for Mn3+/Mn2+ much more positive than for Cr3+/Cr2+?