Tag: Coordination Chemistry
-
USNCO Coordination Chemistry: A Past-Exam Clinic for Isomer Counting
Struggling with USNCO coordination isomer counting? This clinic gives a three-check diagnostic for ligand charge, coordination number/geometry and symmetry, worked teaching illustrations for cis/trans (octahedral MA4B2) and fac/mer (MA3B3), two further traps, and a reusable error-log template. All examples are teaching illustrations, not official contest questions.
-
The USNCO Blind Spot: Inorganic and Descriptive Chemistry (2026)
Thermodynamics and organic get all the attention, but inorganic and descriptive chemistry is where AP and IB students lose marks fastest. Five blocks, decoded with worked reasoning.