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 Entry Task: Nov 4-5 Block 1Question: Provide the Lewis dot, charge of its ion and name of ion for Oxygen. You have 5 minutes!

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Presentation on theme: " Entry Task: Nov 4-5 Block 1Question: Provide the Lewis dot, charge of its ion and name of ion for Oxygen. You have 5 minutes!"— Presentation transcript:

1  Entry Task: Nov 4-5 Block 1Question: Provide the Lewis dot, charge of its ion and name of ion for Oxygen. You have 5 minutes!

2 Agenda  Discuss Ionic Formation ws  Notes on Ionic bonding and formula mass  HW: Binary compounds ws

3 I can…  Create and name binary ionic compounds and provide the mass of its formula.

4  Clear off Desk! Worksheet and Notes out Periodic Table Calculator Writing utensil

5 MAYHAN

6 How are cations made? How are anions made? Why do they do this? Cations are metals that have lost electron(s) to obtain a full octet and has become a positive charge. Anions are nonmetals that have gain an electron(s) to obtain a full octet and has become a negative charge. To be stable like the noble gases with a full octet.

7 Why do transitional elements use Roman numerals? What do Roman numeral mean? Their valence electrons can how many electrons they will lose. The number of valence electrons they have lost.

8 MAYHAN Element Protons Electrons Short hand E. Config # V E Lewis Dot # Gain/Lost electrons for Octet Resulting # of V E Cation/Anion #Charge Name of Ion Rb As Ca I 37 [Kr]2s 1 1 Rb Lost 1 ve- 2 Cation +1 Rubidium ion 33 [Ar]4s p 3 5 As Gain 3 ve- 8 Anion -3 Arsenide 20 [Ar]4s 2 2 Ca Lost 2 ve- 8 Cation +2 Calcium ion 53 [Kr]5s 2 4d 10 5p 5 7 I Gain 1 ve- 8 Anion Iodide

9 Element Protons Electrons Short hand E. Config # V E Lewis Dot # Gain/Lost electrons for Octet Resulting # of V E Cation/Anion #Charge Name of Ion Ga Te Cs 31 [Ar]4s 2 3d 10 4p 1 3 Ga Lost 3 ve- 8 Cation +3 Gallium ion 52 [Kr] 5s 2 4d 10 5p 4 6 Te Gain 2 ve- 8 Anion -2 Telluride 55 [Xe]6s 1 1 Cs Lost 1 ve- 8 Cation +1 Cesium ion

10 Clear off Desk!! I will provide the P.T for Quiz MAYHAN

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12 When cations form positive ions, where does the electron(s) go? Sodium Atom (11e-)_____________________ Lewis Dot for the sodium ATOM Na 1s 2 2s 2 2p 6 3s 1

13 When cations form positive ions, where does the electron(s) go? Sodium Ion (10e-)______________ Lewis Dot for the sodium ION 1s 2 2s 2 2p 6 3s 1 Na [Na] +

14 When anions form negative ions, where did the electron(s) come from? Chlorine Atom (17-)_____________ Lewis Dot for the Chlorine ATOM Cl 1s 2 2s 2 2p 6 3s 2 3p 5

15 When anions form negative ions, where did the electron(s) come from? Chlorine Ion (18e-)________________ Lewis Dot for the Chlorine ION Cl 1s 2 2s 2 2p 6 3s 2 3p 6 Cl [ ] -

16 When cations form positive ions, where does the electron(s) go? When anions form negative ions, where did the electron(s) come from? HERE IS YOUR ANSWER Na [Na] + Cl [ ] - [Na] + Cl [ ] -

17 For each of the set, provide the atoms Lewis Dot, then its combined ion Lewis dot Embedded Practice Li/Br [Li] + Br [ ] - Br Mg/O [Mg] +2 O [ ] -2 O Al/N Mg Li [Al] +3 N [ ] -3 N Al

18 Ionic Bonding In an ionic bond one element will transfer valence electron(s) to another.  Happened when:  Transfer of ve-  Between metal/nonmetal  Creates +/-  Both obtain octet  Become neutral as a compound

19 Ionic Formulas Rules-  Metals in front and nonmetals in back  Use a subscript to note the number of atoms  Balance the charges so the compound is neutral  In the written formula, put “ide” on the anion ending.

20 Provide the formula and names Embedded Practice FormulaName Li/Br_________________________________________ Mg/O________________________________________ Al/N_________________________________________ Na +1 F -1 Sodium fluoride Sr +2 S -2 Strontium sulfide NaF SrS Ga +3 P -3 Gallium phosphide GaP

21 Binary Compounds  Examples:  NaCl Li 3 NAl 2 S 3 MgBr 2 Not Binary LiCN NH 4 Cl Binary compounds are compounds that are formed between only 2 different elements.

22 Lets practice some more… O/Li Oxygen = O -2 Lithium = Li +1 Li +1 O -2 Li Li 2 O Lithium oxide

23 Or the switch method!! O/Li Oxygen = O -2 Lithium = Li +1 Li +1 O -2 Li 2 O Lithium oxide

24 Lets practice some more… Na/N Nitrogen = N -3 Sodium= Na +1 Na +1 N -3 Na Na 3 N Sodium nitride Na +1

25 Or the switch method!! Na/N Nitrogen = N -3 Sodium= Na +1 Na +1 N -3 Na 3 N Sodium nitride

26 Lets practice some more… Br/Be Bromine= Br -1 Beryllium= Be +2 Be +2 Br -1 Br Be Br 2 Beryllium bromide

27 Or the switch method!! Br/Be Bromine= Br -1 Beryllium= Be +2 Be +2 Br -1 Be Br 2 Beryllium bromide

28 Lets practice some more… Al/S Sulfur= S -2 Aluminum= Al +3 Al +3 S Al 2 S3S3 Aluminum sulfide S -2 Al

29 Or the switch method!! Al/S Sulfur= S -2 Aluminum= Al +3 Al +3 S -2 Al 2 S3S3 Aluminum sulfide

30 Lets practice some more… Sr/P Phosphorus= P -3 Strontium= Sr +2 Sr +2 P Sr 3 P2P2 Strontium phosphide Sr

31 Or the switch method!! Sr/P Phosphorus= P -3 Strontium= Sr +2 Sr +2 P -3 Sr 3 P2P2 Strontium phosphide

32 Your turn Embedded Practice FormulaName O/Fe(III)_____________________________________ Ag(I)/N_______________________________________ Pb(IV)/P______________________________________ Cu(II)/I______________________________________ Se/Bi(III)______________________________________ Fe +3 O -2 Iron III oxide Ag +1 N -3 Silver I nitride Fe 2 O 3 Ag 3 N Pb +4 P -3 Lead IV phosphide Pb 3 P 4 Cu +2 I -1 Copper II iodide CuI 2 Bi +3 Se -2 Bismuth III selenide Bi 2 Se 3

33 Reverse the switch!! Co 3 N 2 Formulas back to names Cobalt II nitride

34 Reverse the switch!! AlF 3 Formulas back to names +3 Aluminum Fluoride

35 Reverse the switch!! V2O5V2O5 PbS 2 Ag 2 Se Formulas back to names Vanadium V oxide

36 Reverse the switch!! PbS 2 Formulas back to names +2 Lead IV sulfide That means 2 sulfur time -2 Means WAIT!! Sulfur is -2!!! ALWAYS!!! +4

37 Reverse the switch!! Ag 2 Se Formulas back to names Silver I Selenide

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