Elements of Groups 16, 17 and 18 — Class 12 Maharashtra HSC Chemistry revision notes
A 6-page visual revision sheet for Elements of Groups 16, 17 and 18, written for Class 12 Maharashtra HSC Chemistry. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
A preview of page 1 — all 6 pages open full size in the app.
What this Elements of Groups 16, 17 and 18 sheet covers
Three Families, One Row Apart
Group 16: chalcogens
Group 17: halogens
Group 18: noble gases
Trends Down Each Group
Oxygen's Anomalous Behaviour
Oxygen (unlike S, Se, Te)
Why oxygen and fluorine differ
Oxidation States Across the Three Groups
Allotropy
Oxoacids of Sulfur and Halogens
sulfurous acid
sulfuric acid
pyrosulfuric acid (oleum)
thiosulfuric acid
halogen oxoacid families, oxidation state of X rising +1 to +7
These notes are not a standalone PDF. CapCompass plans Chemistry chapter by chapter against your real exam dates and free hours, and when the plan reaches Elements of Groups 16, 17 and 18 the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.