Quantrex Academy · Free NEET PYQ solutions
NEET Chemistry d and f Block Elements 2024 NEET 2024

NEET Chemistry Question (2024) — Solution

Question

The pair of lanthanoid ions which are diamagnetic is

Options

  1. A. Ce ^ 3+ and Eu ^ 2+
  2. B. Gd ^ 3+ and Eu ^ 3+
  3. C. Pm ^ 3+ and Sm ^ 3+
  4. D. Ce ^ 4+ and Yb ^ 2+

Answer

D. Ce ^ 4+ and Yb ^ 2+

Step-by-step solution

Magnetic moment = n(n+2) n number of unpaired electron Hence Ce ^ 4+ and Yb ^ 2+ are only diamagnetic.

Practice more on Quantrex App →

Related: Chemistry — d and f Block Elements · All PYQ Banks