Name: Period: Date: UNIT 4: BONDING Lesson 7: Naming Ionic Compounds (Part II) By the end of today, you will have an answer to: How do we name ionic compounds that contain transition metals? Do Now! 1. Name these compounds 2. Write formulas for these compounds (a)cas (a) Magnesium chloride: (b) Ca 3P 2 (b) Magnesium oxide: 3. A solid substance was tested in the laboratory. The test results are listed below. dissolves in water is an electrolyte melts at a high temperature Based on these results, the solid substance could be: A) Cu B) CuBr 2 C) C D) C 6H 12O 6 --Explain, in terms of types of elements why the substance MUST be CuBr 2. --Explain, in terms of electrons the type of bond in CuBr 2. --Name one other compound that could have the same test results. Catalyst Activity Write a formula for the compound that forms from these ions: Fe 2+ and O -2 What do you think the name of this compound should be? Write a formula for the compound that forms from these ions: Fe 3+ ando -2 What do you think the name of this compound should be? Based on your answers to the previous questions, explain why iron oxide is not a good name for a compound.
Transition Metals Where are the transition metals on the periodic table? Take 30 seconds to label these metals. Transition Metals often have the ability to lose a different number of electrons to become stable. This way they can create multiple ions with different charges. Ion Symbol Ion Name Ion Symbol Ion Name Cu + Copper(I) ion Sn 2+ Tin(II) ion Cu 2+ Copper(II) ion Sn 4+ Tin(IV) Fe 2+ Iron(II) ion Cr 2+ Chromium(II) ion Fe 3+ Iron(III) ion Cr 3+ Chromium(III) ion Hg 1+ Merury(I) ion Mn 2+ Manganese(II) ion Hg 2+ Mercury(II) ion Mn 3+ Manganese(III) ion Pb 2+ Lead(II) ion Co 2+ Cobalt(II) ion Pb 4+ Lead(IV) ion Co 3+ Cobalt(III) ion Based on the above chart, try to explain the meaning of the ROMAN NUMERAL. Number 1 I 2 II 3 III 4 IV 5 V Are you noticing a trend? Let s practice together: Roman Numeral Copper(I) oxide: Formula: Picture: Copper(II) oxide: Formula: Picture: What if we want to find the name and we are given the formula? EXAMPLE 1: What is the name of this compound,cocl 2? EXAMPLE 2: What is the name of this compound,pbo 2? Now how do we pick? EXAMPLE 3: What is the name of the following compound: CaF 2? EXAMPLE 4: What is the name of the following compound: Ni 3N 2?
Name: Pd: Date: CW 4.7- Naming Ionic Compounds with Transition Metals 10 points Try it on your own! Write the formula or determine the IUPAC Name for the following compounds. Hint: Use the criss-cross rule, but use the proper charge! Determine the formula for the compounds: 1. Copper(I) and Fluorine: Write the IUPAC Name for the following compounds: 6. CrBr 2 2. Magnesium and Oxygen: 7. Al 2S 3 3. Lead (II) and Sulfur: 8. PbO 4. Sodium and Oxygen: 9. CaCl 2 5. Lead (IV) and Nitrite: 10. CrF 2 Summary: 1. When is it appropriate to use Roman Numerals to name ionic compounds? 2. Why is it necessary to use Roman Numerals for both Fe 2+ and Fe 3+ and Cl in naming iron chloride? 3. Why don t you need Roman Numerals to show Sodium Chloride (NaCl)? 4. Why is CuCl 2 named Copper(II) chloride when there is only 1 Copper ion?
Part II: Bonding Practice Go to the website shown below: http://www.learner.org/interactives/periodic/groups_interactive.html Follow the directions on the screen, which show you how to build different ionic compounds. Record the name of each compound and its formula in the table below. Compound Name Formula 1 2 3 4 5 6 7 8 Answer the questions below. (1) List the two polyatomic ions you used. (2) How come iron (II) oxide is not simply called iron oxide? (3) Which one of these compounds was NOT ionic?
Name: Pd: Date: HW 4.7- Naming Ionic Compounds with Transition Metals 10 points Write formulas for the compounds that form from the ions shown below. 1) Iron (III) oxide 2) Copper (I) sulfide 3) Copper (II) bromide 4) Lead (II) chloride 5) Copper (I) oxide Determine the correct IUPAC name for the compounds from the formulas shown below. 6) CuBr 7) Fe 3N 2 8) K 2O 9) SnO 2 Name: Pd: Date: HW 4.7- Naming Ionic Compounds with Transition Metals 10 points Write formulas for the compounds that form from the ions shown below. 1) Iron (III) oxide 2) Copper (I) sulfide 3) Copper (II) bromide 4) Lead (II) chloride 5) Copper (I) oxide Determine the correct IUPAC name for the compounds from the formulas shown below. 6) CuBr 7) Fe 3N 2 8) K 2O 9) SnO 2
Regents Review 10) In the formula X 2(SO 4) 3, the X represents a metal. This metal could be located on the Periodic Table in (1) Group 1 (3) Group 13 (2) Group 2 (4) Group 14 11) X 2(PO4) 3In the formula X 2O 5, the symbol X could represent an element in Group (1) 1 (3) 15 (2) 2 (4) 18 12) Element X is in Group 2 and element Y is in Group 17. What happens when a compound is formed between these two atoms? (1) X loses electrons to Y to form an ionic bond (2) X loses electrons to Y to form a covalent bond (3) X gains electrons from Y to form an ionic bond (4) X gains electrons from Y to form a covalent bond. 13) Explain in words how it is possible to determine the charge of the cation (positive ion) in XF 2. Regents Review 10) In the formula X 2(SO 4) 3, the X represents a metal. This metal could be located on the Periodic Table in (1) Group 1 (3) Group 13 (2) Group 2 (4) Group 14 11) X 2(PO4) 3In the formula X 2O 5, the symbol X could represent an element in Group (3) 1 (3) 15 (4) 2 (4) 18 12) Element X is in Group 2 and element Y is in Group 17. What happens when a compound is formed between these two atoms? (5) X loses electrons to Y to form an ionic bond (6) X loses electrons to Y to form a covalent bond (7) X gains electrons from Y to form an ionic bond (8) X gains electrons from Y to form a covalent bond. 13) Explain in words how it is possible to determine the charge of the cation (positive ion) in XF 2.
Name: Pd: Date: Exit Ticket 4.7- Naming Ionic Compounds with Transition Metals 2 points Rusting is a chemical process that, can take place in metals exposed to the atmosphere. Not all metals however rust. Rusting is common with the metal, iron. The most common form of rust has a chemical formula of FeO. Certain conditions in the air around a metal have to be present for iron to rust. Iron rust which, generally appears brown, is itself a chemical compound quite different from the iron itself. The rusting of iron can be prevented. In towns and large cities where iron sheets are used for roofing houses, rusting can also take place if the iron sheets are not protected from rusting. From http://library.unescoiicba.org/english/secondary_science_series/science_lessons/23_rusting_of_metals.htm 1) What would be the IUPAC name of the most common form of rust? 2) Iron(III) Oxide also exists. What would be the chemical formula of this compound? Name: Pd: Date: Chemistry Exit Ticket 4.7- Naming Ionic Compounds with Transition Metals General 2 points Rusting is a chemical process that, can take place in metals exposed to the atmosphere. Not all metals however rust. Rusting is common with the metal, iron. The most common form of rust has a chemical formula of FeO. Certain conditions in the air around a metal have to be present for iron to rust. Iron rust which, generally appears brown, is itself a chemical compound quite different from the iron itself. The rusting of iron can be prevented. In towns and large cities where iron sheets are used for roofing houses, rusting can also take place if the iron sheets are not protected from rusting. From http://library.unescoiicba.org/english/secondary_science_series/science_lessons/23_rusting_of_metals.htm 1) Most rust is FeO. What would be the IUPAC name of this compound? 2) Iron(III) Oxide also exists. What would be the chemical formula of this compound?