1. Naming
Compounds

2. How you name a compound depends on whether the compound is ionic or covalent.
An ionic compound is a combination of a metal and nonmetal.
A covalent compound is a combination of a nonmetal with another nonmetal.

3. nonmetals metals ionic compound = metal and nonmetal.
covalent compound = nonmetal and nonmetal.

4. Covalent compounds are named with Greek prefixes.
Ionic compounds require a Roman numeral if the metal’s charge is unknown.
Covalent compounds are named with Greek prefixes.
Roman numeral
Examples:
CuS is called copper(II) sulfide
N2O3 is called dinitrogen trioxide
N2O3 is called dinitrogen trioxide
Greek prefixes

5. compounds that require Greek prefixes
compounds that require Roman numerals

6. Ready? Here we go…...
…naming compounds.

7. KI
potassium iodide
ide
Binary compounds end in -ide.

8. CaCl2
calcium chloride
ide
Notice the ide ending?

9. Na2O +1 -2
sodium oxide
The reason there’s two Na ions in the formula is because the sodium loses 1 electron to O,
but O needs two electrons.

10. FeO This requires a Roman numeral ?
(which is the charge on the iron ion)

11. +2 -2
FeO

12. +2
FeO
Answer:
iron(II)oxide

13. Fe2O3
This requires a Roman numeral

14. -6 -2
Fe2O3

15. -6 +6 -2
Fe2O3

16. -6 +6 -2 +3
Fe2O3

17. Fe2O3 +3

18. Fe2O3
Answer:
iron(III)oxide

19. FeO +2
iron(II)oxide
Fe2O3 +3
iron(III)oxide

20. MnCl2
This requires a Roman numeral

21. -2 +2 -1 +2
MnCl2

22. +2
MnCl2

23. manganese(II)chloride
MnCl2
Answer:
manganese(II)chloride

24. K2S
potassium sulfide

25. CaF2
Answer:
calcium fluoride

26. N2O3
This requires Greek prefixes

27. N2O3
Answer:
dinitrogen trioxide

28. Ag2O
silver oxide

29. CBr4
This requires Greek prefixes
carbon tetrabromide

30. Compounds with Polyatomic Ions

31. a polyatomic ion
carbonate
K2CO3
K2CO3 +1 -2

32. K2CO3
Answer:
potassium carbonate

33. nitrate
Mg(NO3)2
NO3 +2 -1
Answer:
magnesium nitrate

34. sulfate
BaSO4
SO4 +2 -2
barium sulfate

35. phosphate
Na3PO4
PO4 -3 +1
sodium phosphate

36. (NH4)2CrO4 (NH4)2CrO4 NH4 CrO4 ammonium chromate ammonium chromate -2+1
ammonium chromate

37. -2 +2 -1
Cu(OH)2

38. +2
Cu(OH)2
copper(II) hydroxide

39. KClO
potassium hypochlorite

40. permanganate
KMnO4
MnO4
potassium permanganate

41. -2 +2
nitrite
Ni(NO2)2
NO2 -1

42. Ni(NO2)2
nickel(II)nitrite

43. Cr(C2H3O2)2 C2H3O2 acetate -2 +2 -1
acetate is CH3COO-1 in your textbook

44. +2
Cr(C2H3O2)2
chromium(II)acetate

45. the end