Which among the following electronic configurations belong to main group elements? A. [Ne]3s^1 B. [Ar]3d^3 4s^2 C. [Kr]4d^10 5s^2 5p^5 D. [Ar]3d^10 4s^1 E. [Rn]5f^0 6d^2 7s^2 Choose the correct answer from the option given below :

NEET UG 2025 · Chemistry · Question 53

NEET 2025 Chemistry, question 53

Question 53 of the NEET 2025 paper (code 45) is a Chemistry question from Classification of Elements and Periodicity in Properties. Its idea, s, p, d, f Block Classification, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 2.

Updated 2026-10-08

Q53 · Chemistry

3s^1

1 B and E only 2 A and C only Official answer 3 D and E only 4 A, C and D only

Official answer: option 2 · NTA final answer key

Same idea

The only question on s, p, d, f Block Classification

No other NEET paper from 2017–2026 tested this exact idea.

s, p, d, f Block Classification: every question and how it was framed

The chapter

Classification of Elements and Periodicity in Properties in ten years of NEET

13 questions from 2017–2026, asked in 9 of 10 papers, about 1.3 a paper. Periodic Properties alone had 13.

Chapter analysis Study this chapter Practise this chapter

The only question on s, p, d, f Block Classification

Classification of Elements and Periodicity in Properties in ten years of NEET

Classification of Elements and Periodicity in Properties: questions per paper