CH099A Kutai/Neumann Name: __________________________Nomenclature

Draw the “staircase” which separates metals from non-metals.Is hydrogen a metal or non-metal?

Identifying the Type of Compound:

I. Ionic: cation bonded to anion. The cation is usually a metal* ion, but can also by NH4+.

a. Metal* ion + nonmetal ion: K2Sb. Metal* ion + polyatomic ion: Ca(NO3)2

II. Molecular (aka covalent) contain 2 different nonmetals: nonmetal + nonmetala. Binary molecular compounds: CO2

b. Hydrocarbons contain carbon + hydrogeni. Alkanes have the formula of C2H2n+2 : C2H6 which is ethane

c. Acid chemical formulae usually begin with H: HBr or H2SO4. Carboxylic acids can be written with H at the beginning or the end: HC2H3O2 or CH3COOH are both ways to write acetic acid.

Practice: Identify the category of compound asionic molecular hydrocarbon (acid)H2S lithium carbonate

FeCl3 acetic acid

C5H12 dinitrogen pentasulfide

P2O5 butane

HNO3 magnesium chloride

SrSO4 sulfuric acid

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I. Ionic Compounds:A. From chemical formula to chemical name

The cation name is identical to the element name: Ca is the element calcium; Ca2+ is the _____________________ion. The anion name is the elemental name with the elemental ending substituted by “ide”: Cl is the element chlorine; Cl− is the _____________________________ion.

Supply the charges for the ions and name them. Remember to use “ion” in the name.

N O F

P S Cl

As Se Br

Li Te I

Name the compound

KCl BaI2

Ca3P2 RbF

Cs2S SrO

Name the compound

LiClO Be(NO3)2

Mg3(PO4)2 FrNO2

Na2SO3 RaCO3

B. From chemical name to chemical formula. Count the charges because all compounds are electrically neutral.

Elements Ion Symbols Formula (remember cation comes 1st)

Chemical Name

sodium and bromine

calcium and oxygen

fluorine and magnesium

nitrogen and barium

Elements Ion Symbols Formula (remember cation

comes 1st)Chemical Name

potassium and sulfate

calcium and nitrite

ammonium and sulfide

aluminum and oxalate

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Writing FormulaeCl− CO3

2− OH− SO42− PO4

3− NO3−

Na+

NH4+

K+

Ca2+

Mg2+

Zn2+

Fe3+

Al3+

H+

C. Naming Ionic Compounds Containing Multivalent Metals

Most transition and post-transition metals are capable of multiple oxidation states (see bottom of polyatomic ion sheet). The stock naming system uses Roman numerals to to identify the charge (or oxidation state) of the metal.Fe2+ is the iron (II) ion; Fe3+ is the iron (III) ion. FeCl3 is iron (III) chloride.Zn, Ag, Cd, Sc, and Y are only capable of a single oxidation state; therefore, the stock naming system is not used.Ions of Hg are Hg2

2+, which is the mercury (I) ion, and Hg2+, which is the mercury (II) ion.

Name these compounds using the stock naming system, if necessry

CrO ZnCl2

CrCO3 PbSO4

FeO Hg(ClO3)2

Fe3(PO4)2 AgNO3

NiBr2 Cu2SO4

PbO2 SnCO3

CuBr2 PbSO3

FeO Hg(ClO3)2

Fe3(PO4)2 Ag3PO3

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II. Molecular Compounds — prefixes are listed on the polyatomic ion sheet. Vowel combinations of “ao” and “oo” are not written—eliminate the last vowel associated with the prefix. Other vowel combinations are allowed.

A. Binary Compounds

Name the CompoundsCO2

N2O5

PCl4

ClO2

SO3 How do you know this is NOT the sulfite ion?

Cl2O7

BrI3

Write the Formulaecarbon monoxide

nitrogen dioxide

diphosphorous pentoxide

trinitrogen dichloride

Dinitrogen tetrachloride

B. Acid Formulae 1. Non-oxy Acids “hydro__________________ic acid”

Element Anion Formula NameF F− HF Hydrofluoric acidClBrISP

CN−

2. Oxy-Acids NO HYDRO. Acids containing –ite ions: “________ous acid” [like tonsillitis]Acids containing –ate ions: “_________ic acid” [if you ate an acid, it would

be icky]Remember to indicate the correct number of hydrogen ions using subscripts to obtain neutral compounds

Anion Formula Name Anion Formula Name

NO2− NO3

−

SO32− SO4

2−

PO33− PO4

3−

ClO− ClO3−

ClO2− ClO4

−

AsO43− C2H3O2

−

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C. Hydrocarbons (Alkanes)# of carbon atoms

1 2 3 4 5 6 8

Prefix meth- eth- prop- but- pent- _______ _______

ALKANES

Name Formula

propane

C6H14

methane

C8H18

butane

C4H6

pentane

C6H12

ethane

Name the compound:

1. BaSO3

2. (NH4)3PO4

3. PBr5

4. MgSO4

5. CaO

6. H3PO4

7. Na2Cr2O7

8. MgO

9. SO3

10. Cu(NO3)2

11. HI

12. N2O

13. MnO

14. AgNO3

15. As2O5

16. Fe2O3

17. HClO

18. N2O3

19. HF

20. H2C2O4

21. NaHCO3

22. SiBr4

23. CuCl2

24. HNO2

25. SnO2

26. BaCrO4

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Write the formula (Remember--never show charges in formulae):

1. hydrobromic acid

2. chromium (III) carbonate

3. magnesium sulfide

4. iodine trichloride

5. lithium hydride

6. ammonium hydroxide

7. calcium chloride

8. hydroselenic acid

9. iron (II) nitride

10. aluminum hydroxide

11. tin (II) fluoride

12. sulfur tetrachloride

13. mercury (II) iodide

14. diphosphorus pentoxide

15. sulfurous acid

16. lead (II) nitrate

17. dihydrogen peroxide

18. sodium oxalate

19. perchloric acid

20. chlorous acid

21. silicon dioxide

22. carbonic acid

23. sodium chlorate

24. xenon hexafluoride

25. nickel (II) nitrate

26. potassium perchlorate

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