Question
Answer the following questions:
a. The figure given alongside illustrates the first ionization enthalpies of first, second and third series of transition elements. Answer the question that follows:
b. Which series amongst the first, second and third series of transition elements have the highest first ionization enthalpy and why?
c. Separation of lanthanoid elements is difficult. Explain.
d. $Sm ^{2+}, Eu ^{2+}$ and $Yb ^{2+}$ ions in solutions are good reducing agents but an aqueous solution of $Ce ^{4+}$ is a good oxidising agent. Why?
a. The figure given alongside illustrates the first ionization enthalpies of first, second and third series of transition elements. Answer the question that follows:
b. Which series amongst the first, second and third series of transition elements have the highest first ionization enthalpy and why?
c. Separation of lanthanoid elements is difficult. Explain.
d. $Sm ^{2+}, Eu ^{2+}$ and $Yb ^{2+}$ ions in solutions are good reducing agents but an aqueous solution of $Ce ^{4+}$ is a good oxidising agent. Why?