Naming Type (III) Naming Type (III) Compounds Compounds

Objective: Objective: To learn how to name To learn how to name molecular compounds containing only molecular compounds containing only

NonmetalsNonmetals

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Latin NumbersLatin Numbers

What is the name for ONE?What is the name for ONE? Mono ExamplesMono Examples Monopoly: The market condition that Monopoly: The market condition that

exists when there is only one seller exists when there is only one seller Monologue: Any composition, as a Monologue: Any composition, as a

poem, in which a single person poem, in which a single person speaks alone. speaks alone.

Latin NumbersLatin Numbers

What is the Latin prefix What is the Latin prefix for eight?for eight?

OctaOcta What are some examples?What are some examples? Octopus OctoberOctopus October Origin: the eighth month Origin: the eighth month

of the early Roman year, of the early Roman year, model of model of September, September, November, DecemberNovember, December

Which of the examples Which of the examples below are type (III) below are type (III)

compounds?compounds? NaCl NaCl FF22

COCO22

CClCCl44 CuCl CuCl COCO33

2-2-

PP22OO55

DisqualifiersDisqualifiers

If it only has one kind of atom. For If it only has one kind of atom. For example, Brexample, Br22 is an element not a is an element not a compound.compound.

If it has a negative or positive If it has a negative or positive charge. For example NHcharge. For example NH44

++ is an ion. is an ion. If it doesn’t start with a nonmetal like If it doesn’t start with a nonmetal like

NaCl is a ionic compoundNaCl is a ionic compound

Rules for Naming Type III Binary Compounds

The first element in the formula is named first, and the full element’s name is used.

2. The second element is named as though it were an anion.

3. Prefixes are used to denote the numbers of atoms present.

4. Do not say mono if the 1st element has only one atom CO2

Name BF3

Rule 1 Name the 1st element, boron. Rule 2 Name the second element

ending in -ide: fluoride. Rules 3 and 4 Use prefixes to denote

numbers of atoms. 1 boron atom: don’t use mono! Three fluorine atoms: use the prefix tri-.

The name of BF3 is boron trifluoride.

Name the Compound NOName the Compound NO

The name for NO is nitrogen monoxide. Note that the second o in mono- has been dropped for easier pronunciation.

The common name for NO, which is often used by chemists, is nitric oxide.

Name the Compound NaClName the Compound NaCl

Note that this compound starts with Note that this compound starts with a metal. You follow the old rules of a metal. You follow the old rules of naming the positive ion followed by naming the positive ion followed by the negative ion.the negative ion.

The name is sodium chlorideThe name is sodium chloride

Name the Compound NName the Compound N22OO55

Dinitrogen pentaoxideDinitrogen pentaoxide

Name the Compound AlName the Compound Al22OO33

Aluminum OxideAluminum Oxide I hope I didn’t fool ya!I hope I didn’t fool ya! This is a metal and non-metal. Not a This is a metal and non-metal. Not a

type(III) compound.type(III) compound.

Name the Compound HName the Compound H22OO

WaterWater I hope I didn’t fool ya!I hope I didn’t fool ya!

Name SOName SO33 and O and O2-2-

Sulfur trioxide Sulfur trioxide Note that the second one has a Note that the second one has a

negative charge. negative charge. This is not a molecule. This is an ion. This is not a molecule. This is an ion.

Its name is oxide. Its name is oxide.

Name CO COName CO CO22 O O22

Carbon monoxideCarbon monoxide Carbon dioxideCarbon dioxide This is one of the seven diatomic This is one of the seven diatomic

elements the name is Oxygenelements the name is Oxygen

Name FName F-- F F22 AlF AlF33 SF SF44

This is an ion …………fluorideThis is an ion …………fluoride This is an element ……fluorineThis is an element ……fluorine This is type(I) ………… aluminum This is type(I) ………… aluminum

fluoride fluoride This is a type(III) ……. Sulfur tetra This is a type(III) ……. Sulfur tetra

fluoridefluoride

Name CaName Ca2+2+ Co Co Co Co2+2+

CalciumCalcium CobaltCobalt Cobalt(II)Cobalt(II)

How do I know if they are How do I know if they are type (I) , (II) or (III)?type (I) , (II) or (III)?

QUIZ 1 – 5 QUIZ 1 – 5

Name the followingName the following 1. PO1. PO44

3-3-

2. P2. P22OO55

3. K3. K33PP

4. O4. O22

5. SO5. SO33

Quiz 6 Quiz 6

6. Which of the below is/are 6. Which of the below is/are molecular compounds? molecular compounds?

(I) PCl(I) PCl33 (II)(II) NONO33--

a. Both (I) and (II)a. Both (I) and (II) b. just (I)b. just (I)

c. Just (II)c. Just (II) d. neither (I) nor (II)d. neither (I) nor (II)

Quiz 7Quiz 7

Which is not a molecular compound?Which is not a molecular compound? COCO22 COCO OO22