Classification of Elements & Periodicity in NSEC: previous year question analysis
Classification of Elements & Periodicity has appeared 19 times in NSEC between 2007 and 2025, making it the 22nd most-asked of 29 chapters and about 1.4% of the bank. Over the last 5 years it has averaged 1.8 questions per year.
Total PYQs
19
Years covered
2007–2025
Weightage rank
#22 of 29
Share of bank
1.4%
How many Classification of Elements & Periodicity questions appeared each year
| Year | Questions | Relative volume |
|---|---|---|
| 2007 | 1 | |
| 2008 | 1 | |
| 2010 | 2 | |
| 2011 | 2 | |
| 2012 | 3 | |
| 2014 | 1 | |
| 2018 | 1 | |
| 2019 | 3 | |
| 2021 | 1 | |
| 2023 | 2 | |
| 2025 | 2 |
Which Classification of Elements & Periodicity sub-topics are asked most
Every question in this chapter is tagged to a sub-topic, so you can see exactly where the marks sit before you revise.
- Isoelectronic ionic radii2 questions
- Ionization energy trends2 questions
- Basic character of hydroxides1 questions
- Electronegativity trends1 questions
- Electronegativity / electronic configuration1 questions
- Isoelectronic species / ionic radius1 questions
- Isoelectronic species / ionic radii trend1 questions
- Acidic/basic/amphoteric nature of oxides1 questions
- Atomic radius trends1 questions
- Isoelectronic species size1 questions
Question formats used in Classification of Elements & Periodicity
- Single-correct MCQ18
- Multiple-correct MCQ1
How Classification of Elements & Periodicity compares with nearby chapters
- #20Amines27
- #21Solid State26
- #22Classification of Elements & Periodicity19
- #23Surface Chemistry13
- #24The s-Block Elements12
Counts are computed from AcadXL’s own NSEC question bank, tagged chapter- and sub-topic-wise and checked against official answer keys. Sign in to attempt the 19 Classification of Elements & Periodicity questions with solutions.