Medium Practice — Set 1

Quick Recap — Oxidation State, Isomerism Types & Reactions

• Isomerism: structural (ionization, hydrate, linkage, coordination) and stereo (geometrical cis-trans, optical).
• Ionization isomers give different ions in solution (e.g. $[Co(NH_3)_5Br]SO_4$ vs $[Co(NH_3)_5SO_4]Br$).
• EAN $=Z-(\text{oxidation state})+2(\text{CN})$.
• Precipitation test: only ions outside the coordination sphere are free (e.g. free $Cl^-$ precipitates as AgCl).