Chemistry·MCQ Practice

Electronic Configuration — MCQ Practice

NEET UG

Version 1Updated 22 Mar 2026

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Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 6 questions available.

Q1medium

Which of the following lanthanoids has an electronic configuration with a $5d^1$ electron in its ground state?

Q2medium

Which of the following lanthanoid ions is diamagnetic?

Q3easy

The most stable oxidation state of Europium (Eu, Z=63) is $+3$ . However, it also exhibits a stable $+2$ oxidation state. What is the electronic configuration of $Eu^{2+}$ ?

Q4easy

What is the correct electronic configuration for Cerium (Ce, Z=58)?

Q5hard

Which of the following lanthanoid ions would be expected to be a strong reducing agent due to its electronic configuration?

Q6medium

Which of the following statements regarding the electronic configuration of lanthanoids is incorrect?