1. INORGANIC COMPOUND NAMING* (pp. 60-69) (type 1) metals, M Non metals (NM) (type 2), transition metals,TM INERT GASES DON’T FORM COMPOUNDS Also called the Stock naming system after chemist Alfred Stock

2. THERE ARE 3 BINARY NAMING CLASSES NM + NM M + NM TM + NM Example FORMULA NAME N 2 Cl 4 dinitrogen tetrachloride Mg 3 P 2 magnesium phosphide TiCl 4 titanium (IV) chloride Naming classes NM= non-metals in `blue’

3. You cannot predict NM +NM combos. Must be given formula or name to find name or formula. You can predict M +NM or TM +NM formulas, so can name and determine formula given M or TM and NM

4. +1 +2 +1,2,3,4,5,6….. (varies) 0 -2-3 +3,( -5) +4,-4 +3 +2 Preferred element charges In NM +NM combinations, element charges are irrelevant. They are relevant for M +TM and TM +NM combos

5. Given stable charges for elements, we can predict neutral compound formulas formed from `+’ and `-’ species Example: Na +1 O 2- Stable ions of Na and O Na 2 O 1 = Na 2 O Neutral compound formed 2 1 2 x (+1 ) + 1 x (-2) = 2 - 2 = 0 Crossing the charge trick

6. In-class Board practice

7. Name P 2 O 5 A.diphosphorus pentoxygen B.phosphorus (V) oxide C.phosphorus oxide D.diphosphorus pentoxide

8. Name Na 2 O A.disodium monoxide B.sodium (I) oxide C.sodium oxide D.sodium (II) oxide

9. Name FeCl 2 A.iron (I) dichloride B.iron(II) chloride C.iron chloride D.iron chloride(I)

10. +1 +2 +1,2,3,4,5,6….. (varies) 0 -2-3 +3,( -5) +4,-4 +3 +2 Preferred element charges In NM +NM combinations, element charges are irrelevant. They are relevant for M +TM and TM +NM combos

11. Extension of Stock naming system to Oxyanions Many elements react with O to form stable, negatively charged `oxyanions’ Cl - chloride ClO - ClO 2 - Hypochlorite Chlorite ClO 3 - ClO 4 - Chlorate perchloric S 2- sulfide SO 3 2- SO 4 2- Sulfitesulfate S 2 O 3 2- S 4 O 6 2- Thiosulfatetetrathionate Examples:

12. Oxyanions (OXY) are treated and named just like NM M + OXY Na + + Cl - M +NM Na + + ClO 3 - Sodium chlorideSodium chlorate TM +NM TM + OXY Fe 3+ + Cl - Fe 3+ + ClO 3 - NaClNaClO 3 FeCl 3 Fe(ClO 3 ) 3 Iron(III) chloride Iron(III) chlorate

13. In-class Board practice with OXYANIONS

14. The oxyanion nitrate has the formula NO 3 -. What is the formula and name of a combination nitrate with Ca ? (hint: Ca prefers a +2 charge.) A.CaNO 3 calcium(II) nitrate B.Ca 2 (NO 3 ) calcium nitrate C.Ca(NO 3 ) 2 calcium (II) nitrate D.Ca(NO 3 ) 2 calcium nitrate E.Kiss off, Fong

15. The Big picture, Part 4 What does Dalton’s atom look like ?? What’s in the atomic box ?

16. The evolving inside picture of the atom (2.4-2.5) Philosophical Magazine 44, 295 (1897) Philosophical Magazine Series 6, 21, 669-688 (1911) Thomson Model 1897 Philosophical Magazine Series 6 26. 1-25 (1913) Bohr Model 1913

17. Dimensions of the atomic model Nuclear radius ~10 -15 meters Electronic cloud radius ~ 10 -10 meters Electronic radius/Nuclear radius ~ 10 +5

18. Atom dimensions in familiar terms. Baseball as nucleus Old Yankee Stadium, the Bronx Electrons start here (~2.4 miles past cheap seats) 3”

19. Nucleus(+) ~ dimension of Rutherford’s electronic cloud (-) (2.4 mile radius from baseball nucleus)

20. Subatomic pieceMass (g)Charge proton1.67*10 -30 neutron 1.67*10 -30 electron 9.11*10 -34 Masses of subatomic pieces (table 2.1, p. 46) + 0 - In neutral atoms # protons = # electrons

21. Proton mass Electron mass