Chemkit

Inorganic chemistry

Coordination chemistry, oxidation-state bookkeeping, crystal-field splitting, and solid-state stoichiometry.

7 guides 1 calculator 2 cheat sheets

Reading path

Start here. Each guide is a self-contained tutorial with worked examples and cited sources.

  1. Reading a solubility table without memorizing it The three families that cover 90 percent of solubility questions, the classic exceptions, and how to spot them at a glance. 9 min
  2. Ksp: from rules to numbers Move from 'insoluble' to a real molar solubility, then correct for the common-ion effect, pH, and selective precipitation. 11 min
  3. Crystal field theory: predicting color and magnetism d-orbital splitting, Δo, high-spin vs low-spin, and how one diagram predicts a complex's color, magnetic moment, and geometry. 12 min
  4. The 18-electron rule and organometallic bookkeeping Transition metals like to have 18 valence electrons. Count them right and half of organometallic reactivity falls out. 11 min
  5. MO theory for diatomic molecules Bond order, magnetism, and bond length fall out of one MO diagram. Build it once for the first row and every diatomic follows. 12 min
  6. Reading a Latimer diagram: redox at a glance One line shows every oxidation state and every E° between them. Read forward for stability, backward for disproportionation, both for oxidiser strength. 11 min
  7. Point groups and molecular symmetry Every molecule belongs to a point group. The five symmetry elements identify it; the group then predicts polarity, chirality, and spectral activity. 12 min

Calculators

Cheat sheets