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
Connect the official 2026 paper with current Chemistry practice without labelling original previews as PYQs.
250 original questions · explicit provenance labels
ChemistryPlate 64
NeetVellum atlas · fig. chemistry
64
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.