1. Polyatomic Ions
Part 1

3. Adam Janus

4. Stanley Janus and his fiancé Theresa

5. A Nurse’s Hunch
Helen Jensen

6. A nurse's hunch
Helen Jensen

7. Mary Kellerman A a

8. Two off duty Chicago firefighters Philip Cappitelli and Richard Keyworth, make the connection

9. Richard Keyworth of Elk Grove Village, remembering with an old Newsweek magazine, helped link the deaths of those who died in 1982 from cyanide-laced Tylenol.

10. Public Response

11. Tylenol is pulled off shelves

12. Tylenol is pulled off shelves
160 poisoned Tylenol capsules were found.
"This could have gone on for years without someone knowing about it.“ "Who knows how many could have died“, had the connection to Tylenol not been made so swiftly.
Unfortunately the connection was still not swift enough.

13. Mary Reiner

14. Mary McFarland

15. Paula Prince

17. Changes Made

18. The case remains unsolved

19. Cyanide
Cyanide is a polyatomic ion. A group of atoms with a charge.
CNˉ
Note that the charge on this ion is not considered an oxidation number since it is not a charge on single atom.

20. Polyatomic Ions

21. Memorization Hints
There are only two positive polyatomic ions [ammonium & mercury(I)]. All other polyatomic ions are negative.

22. Memorization Hints

23. Memorization Hints

24. Homework Worksheet: Ions (Due tomorrow).
Ions Quiz will be Thursday 12/8/16.