Example 1 · difficulty 2/5
Which ground-state electronic configuration correctly shows the copper exception?
- A. [Ar] 3d¹⁰ 4s¹
- B. [Ar] 3d⁹ 4s²
- C. [Ar] 3d¹⁰ 4s²
- D. [Ar] 3d⁸ 4s² 4p¹
2020 source guide · Chemistry
NEET 2020 Chemistry D- and F-Block Elements Questions
Connect the official 2020 paper with current Chemistry practice without labelling original previews as PYQs.
200 original questions · explicit provenance labels
ChemistryPlate 66
NeetVellum atlas · fig. chemistry
66
What to master
electronic configurations, oxidation states, colour, magnetism and lanthanoid trends.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 1/5
What is the electronic configuration of Fe³⁺ in terms of the argon core?
- A. [Ar] 3d³ 4s²
- B. [Ar] 3d⁵
- C. [Ar] 3d⁶
- D. [Ar] 3d⁵ 4s¹
Example 3 · difficulty 3/5
Which doubly charged ion has a half-filled 3d subshell?
- A. Fe²⁺
- B. Co²⁺
- C. Mn²⁺
- D. Ni²⁺
The evidence-first practice loop
- 1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
- 2. Attempt closed-bookExpose the concept or execution gap before rereading.
- 3. Repair and returnClassify the miss and re-practice after a delay.
Canonical chapter practice
Frequently asked questions
Are these official NEET 2020 Chemistry D- and F-Block Elements PYQs?
No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.
How should I use the NEET 2020 paper?
Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.