JEE Main Inorganic Chemistry: High-Yield Tips 2026

Inorganic Chemistry is the section of JEE Main Chemistry where disciplined NCERT mastery pays the highest dividends. JEE Main Inorganic questions are almost entirely NCERT-based — a student who has worked through NCERT Class 11 and 12 Inorganic content systematically and tested it with previous-year questions can score 30 to 35 marks out of 40 in this section. This guide identifies the high-yield areas and gives you the study tactics that translate NCERT reading into exam marks.

Priority 1: Coordination Compounds

Coordination compounds contributes 3-4 marks every session — the highest single-chapter yield in Inorganic. Master five sub-topics: (1) IUPAC naming of coordination compounds (ligands named before metal, metal in parentheses with Roman numeral for oxidation state, anionic complex ends in "-ate"); (2) isomerism types (structural: ionisation, hydrate, linkage, coordination; stereoisomerism: geometric and optical); (3) Crystal Field Theory (d-orbital splitting in octahedral: t₂g and eₓ sets; high spin vs low spin based on Δ vs pairing energy; colour arises from d-d transitions); (4) VBT hybridisation of complexes; (5) stability of complexes (chelate effect: bidentate > monodentate). JEE tests all five, usually in two to three questions per session. Test your coordination chemistry knowledge with a free mock.

Priority 2: p-Block Elements

The p-block spans Groups 13 to 18 and is tested extensively. Key themes: anomalous behaviour of the second-period element (diagonal relationship with the period-3 element directly below and to the right — e.g., Li resembles Mg, Be resembles Al, B resembles Si). Inert pair effect: stability of lower oxidation states increases down the group (Tl prefers +1 over +3, Pb prefers +2 over +4, Bi prefers +3 over +5). Allotropes of important elements: carbon (diamond, graphite, fullerene), sulphur (rhombic, monoclinic), phosphorus (white, red, black).

For Group 15: NH₃ vs PH₃ — NH₃ is a stronger base (lone pair more available) but PH₃ is a weaker acid. For Group 16: SO₂ (V-shaped, lone pair on S) and SO₃ (planar triangular). For Group 17: interhalogen compounds and their hydrolysis products — ClF₃ + H₂O → HF + HClO₂. Ozone is an allotrope of oxygen with structure O₃ (bent, resonance structures). For Group 18: noble gas compounds of Xe (XeF₂, XeF₄, XeF₆) and their structures via VSEPR. These group-by-group structural comparisons are a favourite JEE question format.

Priority 3: d and f Block and Periodic Trends

d-block transition metals: variable oxidation states (due to close energy of 3d and 4s electrons), coloured ions (incomplete d subshell), magnetic properties (unpaired d electrons), catalytic activity, and complex formation. Lanthanide contraction: steady decrease in atomic and ionic radii across the lanthanide series (shielding by 4f electrons is poor) — explains why 5d elements have almost the same radii as 4d elements. JEE tests this through questions about the similarity of Zr and Hf properties.

Periodic trends: ionisation enthalpy, electron gain enthalpy, and electronegativity all generally increase left-to-right (with exceptions: Be > B, N > O due to stable half-filled 2p and full 2s; EA of F < Cl due to small size). Atomic radius decreases left-to-right. These trends with their exceptions are tested in 3-4 questions per session. NCERT Class 11 Chapter 3 (Classification of Elements) is the primary source — read it once actively and then drill PYQs. For the full strategic framework, see our Chemistry 2026 strategy guide and our coordination compounds naming guide.