Example 1 · difficulty 3/5
Which coordination entity has both coordination number 4 and central-metal oxidation state +2?
- A. [Co(NH3)6]3+
- B. [Fe(CN)6]4−
- C. [PtCl4]2−
- D. [Ag(NH3)2]+
2026 source guide · Chemistry
NEET 2026 Chemistry Coordination Compounds Questions
Use this page to connect the official 2026 paper with current Chemistry practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.
What to master
nomenclature, isomerism, bonding, crystal fields and magnetic behaviour.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 2/5
Which pair consists of ionisation isomers?
- A. cis-[Pt(NH3)2Cl2] and trans-[Pt(NH3)2Cl2]
- B. [Co(NH3)5(NO2)]Cl2 and [Co(NH3)5(ONO)]Cl2
- C. [Cr(H2O)6]Cl3 and [Cr(H2O)5Cl]Cl2·H2O
- D. [Co(NH3)5Br]SO4 and [Co(NH3)5SO4]Br
Example 3 · difficulty 2/5
Which pair has the same overall composition but differs in the number of water molecules inside the coordination sphere?
- A. [Cr(H2O)6]Cl3 and [Cr(H2O)5Cl]Cl2·H2O
- B. [Co(NH3)6][Cr(CN)6] and [Cr(NH3)6][Co(CN)6]
- C. cis-[Co(en)2Cl2]+ and trans-[Co(en)2Cl2]+
- D. [Co(NH3)5(NO2)]2+ and [Co(NH3)5(ONO)]2+
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 2026 Chemistry Coordination Compounds 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 2026 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.