AIPMT-PRELIMS Chemistry The d– and f–Block Elements Class 12 Questions

In the following reaction:

Which of the statements is not true?

For the four successive transition elements (Cr, Mn, Fe and Co), the stability of +2 oxidation state will be there in which of the following order?

Which one of the following ions has electronic configuration [Ar]₃d⁶?

The correct order of decreasing second ionization enthalpy of Ti = 22, V = 23, Cr = 24 and Mn = 25 is -

Which one of the following ions is the most stable in aqueous solution?

More number of oxidation states are exhibited by the actinoids than by the lanthanoids. The main reason for this is :

Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy?

The main reason for larger number of oxidation states exhibited by the actinides than the corresponding lanthanides, is:

Lanthanoids are :-

Among K, Ca Fe and Zn, the element which can form more than one binary compound with chlorine is :-

Among the following series of transition metal ions, the one where all metal ions have 3d² electronic configuration is :-

Which one of the following characteristics of the transition metals is associated with their catalytic activity:

The basic character of the transition metal monoxides follows the order:

The correct order of ionic radii of Y³⁺, La³⁺, Eu³⁺, and Lu³⁺ is:

Which of the following shows maximum number of oxidation states :-

Zn gives H₂ gas with H₂SO₄ & HCl but not with HNO₃ because :-

Which of the following statement is not correct

Which of the following element exhibit maximum oxidation state :