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Naming Type (III) Compounds Objective: To learn how to name molecular compounds containing only Nonmetals Go to pg 95 Note: If you’re viewing this online, make sure you hit “slide show” then “from beginning”
Latin Numbers • What is the name for ONE? • Mono Examples • Monopoly: The market condition that exists when there is only one seller • Monologue: Any composition, as a poem, in which a single person speaks alone.
Latin Numbers • What is the Latin prefix for eight? • Octa • What are some examples? • Octopus October • Origin: the eighth month of the early Roman year, model of September, November, December
Which of the examples below are type (III) compounds? • NaCl • F2 • CO2 • CCl4 • CuCl • CO32- • P2O5
Disqualifiers • If it only has one kind of atom. For example, Br2 is an element not a compound. • If it has a negative or positive charge. For example NH4+ is an ion. • If it doesn’t start with a nonmetal like NaCl 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 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 NaCl • Note that this compound starts with a metal. You follow the old rules of naming the positive ion followed by the negative ion. • The name is sodium chloride
Name the Compound N2O5 • Dinitrogen pentaoxide
Name the Compound Al2O3 • Aluminum Oxide • I hope I didn’t fool ya! • This is a metal and non-metal. Not a type(III) compound.
Name the Compound H2O • Water • I hope I didn’t fool ya!
Name SO3 and O2- • Sulfur trioxide • Note that the second one has a negative charge. • This is not a molecule. This is an ion. Its name is oxide.
Name CO CO2 O2 • Carbon monoxide • Carbon dioxide • This is one of the seven diatomic elements the name is Oxygen
Name F- F2 AlF3 SF4 • This is an ion …………fluoride • This is an element ……fluorine • This is type(I) ………… aluminum fluoride • This is a type(III) ……. Sulfur tetra fluoride
Name Ca2+ Co Co2+ • Calcium • Cobalt • Cobalt(II)
QUIZ 1 – 5 • Name the following • 1. PO43- • 2. P2O5 • 3. K3P • 4. O2 • 5. SO3
Quiz 6 • 6. Which of the below is/are molecular compounds? (I) PCl3 (II) NO3- a. Both (I) and (II) b. just (I) c. Just (II) d. neither (I) nor (II)
Quiz 7 • Which is not a molecular compound? • CO2 CO O2