naming type (iii) compounds objective: to learn how to name molecular compounds containing only...
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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
Go to pg 95Go to pg 95
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““from beginning”from beginning”
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 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
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)