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. 7 questions available.

Q1medium

Which of the following electronic configurations is incorrect according to the Aufbau principle, Pauli's exclusion principle, and Hund's rule?

Q2hard

What is the correct electronic configuration for the $Cr^{3+}$ ion (Atomic number of Cr = 24)?

Q3medium

How many unpaired electrons are present in a $Fe^{2+}$ ion (Atomic number of Fe = 26)?

Q4easy

Which of the following sets of quantum numbers is NOT allowed for an electron in an atom?

Q5medium

Which of the following elements has an electronic configuration with 5 electrons in its $3d$ subshell?

Q6easy

An atom has a total of 17 electrons. What is its electronic configuration?

Q7medium

Which of the following statements about electronic configuration is INCORRECT?