Highest-yield subtopics (do first): VSEPR shapes with lone pairs ($XeF_{2}$, $XeF_{4}$, $SF_{4}$, $ClF_{3}$), MOT bond order and magnetism ($O_{2}$, $O_{2}^{-}$, $N_{2}$), and dipole moment comparisons. These appear in 2–3 questions per year.

One-step shape identification: Memorize the steric number → hybridization → shape chain. Practice going from formula to shape in under 30 seconds: count valence electrons, subtract bond pairs, divide remaining by 2 for lone pairs, compute SN.

MOT strategy: First determine Z to choose the correct filling order. Write out the configuration sequentially, counting electrons one by one. Then apply BO formula. Do not skip the configuration step — errors in BO always trace back to the filling order mistake.

Dipole moment shortcut: If the central atom has no lone pairs AND all substituents are identical → μ = 0. Any lone pair on the central atom or any different substituent → μ ≠ 0. Apply this before drawing the full structure.

Born-Haber numericals: These appear 1–2 times per decade in NEET. Know the formula and practice sign conventions. The most frequent error is putting the wrong sign on EA. Always check: $\Delta H$_sub, ½$\Delta H$_diss, IE are all positive (endothermic); EA and U (lattice energy) are negative.

Frequently confused pairs to distinguish:

• $XeF_{2}$ (linear, $sp^{3}$d) vs $XeF_{4}$ (square planar, sp^{3}$$d^{2})
• $NF_{3}$ (μ ≠ 0, pyramidal) vs $BF_{3}$ (μ = 0, trigonal planar)
• $O_{2}$ (paramagnetic) vs $O_{2}^{2-}$ (diamagnetic)
• $N_{2}$ (π2p before σ2p) vs $O_{2}$ (σ2p before π2p)

Time allocation: Chemical bonding questions are typically 1–2 minute questions. If a shape or bond-order question takes more than 90 seconds, move on and revisit — do not let it consume disproportionate time.

Trap awareness: NEET setters favor questions that test understanding over memorization — e.g., asking bond order of $O_{2}^{2-}$ (not commonly memorized), or asking which of $ClF_{3}$/$BrF_{3}$ has T-shape (both do — it tests whether you know the pattern, not just one molecule).