4-4.4 - 1 Metals Non- metals Electron configurations of...

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Unformatted text preview: 1 Metals Non- metals Electron configurations of anions and cations . Section 4.1 A nonmetal _________________electron(s) to become a(n) ______________________ which is isoelectronic with its nearest noble gas. GAINS ANION Hi EN Lo EN Goal: Gain or lose e-s to get a Noble Gas Core A metal _________________electron(s) to become a(n) ______________________ which is isoelectronic with its nearest noble gas. LOSES CATION grabbers givers Predicting charges of anions and cations . Section 4.1 The charge on the cation = # e- s lost. The charge on the cation = family #. Al is group 3 Al 3+ The charge on the anion = # e- s gained. The charge on the anion = family # - 8. S is group 6 S 2- What are the expected charges for P and Ca, when they form ions 1. P 3+ , Ca 2- 2. P 5+ , Ca 6- 3. P 3- , Ca 6- 4. P 3- , Ca 2+ 5. P 5- , Ca 6+ Electron Configuration of Cations Valence e-s in highest n quantum number are lost first. When valence e-s have the same n, the e-s in the highest l quantum number are lost first. Section 4.2 Any engineer knows the e-s are NOT removed in the reverse order they came in. Remove valence p, then s, then d. Na Ca Zr In [Ne] 3s 1 [Ar] 4s 2 Element e- config Cation e- config [Kr] 5s 2 4d 2 Mn [Ar] 4s 2 3d 5 [Kr] 5s 2 4d 10 5p 1 Electron Configuration of Cations Na 1+ [Ar] Ca 2+ Zr 2+ [Kr] 4d 2 Mn 2+ [Ar] 3d 5 In 1+ [Kr] 5s 2 4d 10 [Kr] 5s 2 4d 10 5p 1 In 3+ [Kr] 4d 10 Section 4.2 [Ne] 2 Cl Se N [Ne] 3s 2 3p 5 [Ar] 4s 2 3d 10 4p 4 Element e- config Anion e- config [He] 2s 2 2p 3 F [He] 2s 2 2p 5 Electron Configuration of Anions Cl 1- Section 4.2 [Ne] 3s 2 3p 6 [Ar] or Se 2- [Ar] 4s 2 3d 10 4p 6 or [Kr] N 3- [He] 2s 2 2p 6 or [Ne] F 1- [He] 2s 2 2p 6 or [Ne] The new e-s go in the lowest energy orbital that is available....
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4-4.4 - 1 Metals Non- metals Electron configurations of...

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