| organic-chemistry↗ | Contextual Umbrella | Units 13-19 | Editorial umbrella over current Organic Chemistry units; C02 owns focused organic routes. |
| chemical-bonding↗ | Current Official Scope | Unit 3 | Own the full Chemical Bonding and Molecular Structure unit despite shorter route label. |
| thermodynamics↗ | Current Official Scope | Unit 4 | Own Chemical Thermodynamics. |
| equilibrium↗ | Current Official Scope | Unit 6 | Broad owner for physical and chemical equilibrium plus the relationship to ionic equilibrium. |
| atomic-structure↗ | Current Official Scope | Unit 2 | Canonical content owner for official Atomic Structure. |
| chemical-kinetics↗ | Current Official Scope | Unit 8 | Own Chemical Kinetics. |
| electrochemistry↗ | Partial Or Merged Scope | Unit 7 | Focused split of Redox Reactions and Electrochemistry; owns electrochemical portion only. |
| coordination-compounds↗ | Current Official Scope | Unit 12 | Own Co-ordination Compounds. |
| p-block-elements↗ | Current Official Scope | Unit 10 | Own the current general Group 13-18 trends scope, not encyclopaedic compound chemistry. |
| d-and-f-block-elements↗ | Current Official Scope | Unit 11 | Own first-row transition trends, K2Cr2O7, KMnO4, lanthanoids and actinoids at current depth. |
| hydrocarbons↗ | Current Official Scope | Unit 15 | Current official Organic Chemistry unit; C02 content owner. |
| haloalkanes-haloarenes↗ | Partial Or Merged Scope | Unit 16 | Editorial/NCERT naming for the current unit Organic Compounds Containing Halogens. |
| alcohols-phenols-ethers↗ | Partial Or Merged Scope | Unit 17 | Focused split of Organic Compounds Containing Oxygen. |
| aldehydes-ketones↗ | Partial Or Merged Scope | Unit 17 | Focused split of Organic Compounds Containing Oxygen. |
| carboxylic-acids↗ | Partial Or Merged Scope | Unit 17 | Focused split of Organic Compounds Containing Oxygen. |
| amines↗ | Partial Or Merged Scope | Unit 18 | Focused route within Organic Compounds Containing Nitrogen; unit also includes diazonium salts. |
| biomolecules↗ | Current Official Scope | Unit 19 | Own Biomolecules; C02 content owner. |
| polymers↗ | Historical Or Not Currently Listed | Not a 2026 Chemistry unit | Dedicated Polymers unit is not listed in the official 2026 Chemistry syllabus. |
| solutions↗ | Current Official Scope | Unit 5 | Own Solutions. |
| solid-state↗ | Historical Or Not Currently Listed | Not a 2026 Chemistry unit | Dedicated Solid State unit is not listed in the official 2026 Chemistry syllabus. |
| surface-chemistry↗ | Historical Or Not Currently Listed | Not a 2026 Chemistry unit | Dedicated Surface Chemistry unit is not listed; practical Unit 20 still mentions sol preparation. |
| redox-reactions↗ | Partial Or Merged Scope | Unit 7 | Focused split of Redox Reactions and Electrochemistry; owns oxidation/reduction and balancing. |
| s-block-elements↗ | Historical Or Not Currently Listed | Not a dedicated 2026 Chemistry unit | s-block appears as a periodic-table block in Unit 9, but dedicated s-block chemistry is not listed. |
| states-of-matter↗ | Historical Or Not Currently Listed | Not a 2026 Chemistry unit | Dedicated States of Matter unit is not listed in the official 2026 Chemistry syllabus. |
| periodic-classification↗ | Current Official Scope | Unit 9 | Editorial short name for Classification of Elements and Periodicity in Properties. |
| some-basic-concepts↗ | Current Official Scope | Unit 1 | Own Some Basic Concepts in Chemistry. |
| ionic-equilibrium↗ | Partial Or Merged Scope | Unit 6 | Focused child of Equilibrium for acid-base, buffer, hydrolysis and solubility depth. |
| environmental-chemistry↗ | Historical Or Not Currently Listed | Not a 2026 Chemistry unit | Dedicated Environmental Chemistry unit is not listed; specific environmental effects may occur inside current organic scope. |
| chemistry-everyday-life↗ | Historical Or Not Currently Listed | Not a 2026 Chemistry unit | Dedicated Chemistry in Everyday Life unit is not listed in the official 2026 Chemistry syllabus. |
| structure-of-atom↗ | Duplicate Intent Review Required | Overlaps Unit 2 | Frozen architecture supplies no distinct intent from Atomic Structure. No second near-identical article is authored. |