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Friday, 9 October

NEET UG 2017 · Chemistry · Question 72

NEET 2017 Chemistry, question 72

Question 72 of the NEET 2017 paper (code A) is a Chemistry question from Classification of Elements and Periodicity in Properties. Its idea, Deducing Group, Period, and Block from Atomic Number, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 2.

Updated 2026-10-08

Q72 · Chemistry

The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration ?

  1. 1Halogen family, [Rn] 5f146d107s27p55f^{14}6d^{10}7s^27p^5
  2. 2Carbon family, [Rn] 5f146d107s27p25f^{14}6d^{10}7s^27p^2Official answer
  3. 3Oxygen family, [Rn] 5f146d107s27p45f^{14}6d^{10}7s^27p^4
  4. 4Nitrogen family, [Rn] 5f146d107s27p65f^{14}6d^{10}7s^27p^6

Official answer: option 2 · CBSE official answer key

Same idea

The only question on Deducing Group, Period, and Block from Atomic Number

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

Deducing Group, Period, and Block from Atomic Number: 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.

Classification of Elements and Periodicity in Properties: questions per paper

0241’171’181’192’200’211’221’232’242’252’26