NEET UG 2018 · Chemistry · Question 90
NEET 2018 Chemistry, question 90
Question 90 of the NEET 2018 paper (code AA) is a Chemistry question from Structure of Atom. Its idea, Electronic Filling Rules, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 1.
Updated 2026-10-08
Q90 · Chemistry
Which one is a wrong statement ?
The figure, described in words
Option 1 shows orbital box diagram for N: 1s ↑↓, 2s ↑↓, 2p boxes ↑ ↑ ↓.
- 1The electronic configuration of N atom is [↑↓] [↑↓] [↑][↑][↓]Official answer
- 2An orbital is designated by three quantum numbers while an electron in an atom is designated by four quantum numbers.
- 3Total orbital angular momentum of electron in 's' orbital is equal to zero.
- 4The value of m for is zero.
Official answer: option 1 · CBSE official answer key
Same idea
The only question on Electronic Filling Rules
No other NEET paper from 2017–2026 tested this exact idea.
Electronic Filling Rules: every question and how it was framed
The chapter
Structure of Atom in ten years of NEET
16 questions from 2017–2026, asked in 10 of 10 papers, about 1.5 a paper. Quantum Numbers alone had 16.