NEET Chemistry The d– and f–Block Elements Class 12 Questions

Assertion (A): Actinoids form relatively less stable complexes as compared to lanthanoids.

Reason (R): Actinoids can utilise their 5f orbitals along with 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding.

Which of the following statements concerning lanthanide elements is false?

Cerium (Z = 58) is an important member of the lanthanoids. Which of the following statements about cerium is incorrect?

Which of the following metals forms ionic MO oxides except for a specific element?

Which transition element has only one oxidation state of +2?

Which transition metal has a positive standard electrode potential (E o) value that indicates its inability to liberate H2 from acids?

Which oxidation state is attained in the oxides from Sc2O3 to Mn2O7?

Which of the following series is part of the transition metals?

Which of the following metals does not form higher oxides above its highest oxidation state as mentioned in the NCERT context?

What is a notable physical property of potassium permanganate?

What is primarily responsible for the higher enthalpies of atomisation in transition elements?

What is the solubility of potassium permanganate in water at 293 K?

What characteristic property of transition elements contributes to their higher enthalpies of atomisation?

Which of the following transition elements has the maximum number of unpaired electrons?

What is the solubility of potassium permanganate in water at 293 K?

Which of the following metals does not form ionic MO oxides?

Which element exhibits both +2 and +3 oxidation states, showing behavior similar to europium?

Which of the following statements is true about the oxidation state of chromium in chromate and dichromate ions?

What is the magnetic property exhibited by potassium permanganate?

What is the characteristic magnetic property of potassium permanganate?

What is a primary reason for the higher enthalpy of atomisation observed in transition elements?

What is the magnetic property of potassium permanganate?

Which transition metal exhibits the oxidation states from +2 to +7?

What is the magnetic property of many transition metal ions due to the presence of unpaired electrons?

Which of the following transition metal ions exhibits a violet color in its aqueous solution?

What is the structure of the dichromate ion, Cr2O7 2–?

Which element exhibits both +2 and +3 oxidation states similar to europium?

What is the color of potassium permanganate crystals?

What is the solubility of potassium permanganate in water at 293 K?

What is the magnetic property of potassium permanganate?

Which of the following statements about chromates and dichromates is correct?

Which of the following statements about the transition elements is correct?

Which of the following statements about transition elements is correct?

Which of the following statements about transition elements is correct?

Which of the following statements about the oxidation states and behavior of lanthanoids is correct?

Which of the following statements about the oxidation states of transition metals is correct?

Which of the following statements about the properties of d-block elements is correct?

Which of the following combinations about the properties of d-block elements is correct?

Which of the following statements about transition elements is correct?

Which of the following statements about the properties of the d-block elements are correct?

Which of the following combinations correctly describes properties and behaviors of transition elements?

Which of the following statements about the standard electrode potentials of d-block elements is correct?

Which of the following statements about the chromate and dichromate ions is correct?

Which of the following statements about the standard electrode potentials of transition metals is correct?

Which of the following combinations about the properties of d-block elements are correct?

Which of the following combinations correctly describe the properties of transition elements?

Which of the following statements about the oxidation states and behavior of lanthanoids is correct?

Calculate the magnetic moment (in BM) of a transition metal ion with 3 unpaired electrons using the spin-only formula.

Which of the following elements exhibits an effect similar to lanthanoid contraction due to the imperfect shielding of electrons?

Which of the following statements about the properties of d-block elements is correct?