List of top Chemistry Questions on Lanthanoids and Actinides asked in CUET (PG)

Choose the Diamagnetic triopositive ion of Lanthanoids: A. La, B. Ce, C. Eu, D. Yb, E. Lu.

Find the ground state term symbol for Pr\(^{3+}\) (Pr = 59).

Europium (Eu) resembles Calcium (Ca) in the following ways:
(A). Both are diamagnetic
(B). Insolubility of their sulphates and carbonates in water
(C). Solubility of these metals in liquid NH3
(D). Insolubility of their dichlorides in strong HCI
Choose the correct answer from the options given below:

The Lanthanide contraction from Ce to Lu is