JEE Main 2023 Chemistry question
Which of the following elements have half-filled f-orbitals in their ground state ? (Given : atomic number Sm = 62; Eu = 63; Tb = 65; Gd = 64; Pm = 61) (A) Sm (B) Eu (C) Tb (D) Gd (E) Pm Choose the correct answer from the options given below :
Answer: (B)