General Properties of Lanthanoids

Among $\mathrm{Ce}\left(4{\mathrm{f}}^{1}5{\mathrm{d}}^{1}6{\mathrm{s}}^2\right), Nd\left(4{\mathrm{f}}^{1}6{\mathrm{s}}^2\right), \mathrm{Eu}\left(4{\mathrm{f}}^{7}6{\mathrm{s}}^2\right)$ and $\mathrm{Dy}\left(4{\mathrm{f}}^{10}6{\mathrm{s}}^2\right)$, the elements having highest and lowest $3$rd ionisation energies, respectively are

Anti-penultimate electronic configuration of a trivalent lanthanide ion is 4f³ and has similar colour in aqueous solution as another trivalent lanthanide ion having anti-penultimate electronic configuration of

Cerium $\left(\mathrm{Z}=\text{58}\right)$ is a member of the lanthanoids. Identify the incorrect statements about cerium from the following

The most basic hydroxide from the following is

Which of the following lanthanoid ions is diamagnetic?
(At nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)

Knowing that the chemistry of lanthanoids [Ln] is dominated by its +3 oxidation state, which of the following statements is incorrect?

Which one of the following is the correct increasing order of the magnitude of ionic radii of $\mathrm{C}{\mathrm{e}}^{3+},\mathrm{L}{\mathrm{a}}^{3+},\mathrm{P}{\mathrm{m}}^{3+}$ and $\mathrm{Y}{\mathrm{b}}^{3+}$ ?

Which of the following ions show colour:

Lanthanide contraction is due to

Which of the following statement is wrong regarding lanthanoids?

Which statement is incorrect with reference to inner transition elements?

What is the general molecular formula of the products obtained on heating lanthanoids (Ln) with sulphur?

Which one of the following lanthanide ions does not exhibit paramagnetism?

Which one of the following lanthanide ions does not exhibit paramagnetism?

Which one of the following lanthanide ions does not exhibit paramagnetism?

What is the percentage of lanthanides and iron in Misch metal respectively?

The percentage of lanthanides and iron, respectively, in Misch metal are

Which lanthanoid compound is used as pigment?

Lanthanoid contraction is caused due to

Which of the following statements is incorrect?