Electrons and Quantum Mechanics - Oakland Schools

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Analysis and Conclusions 1. Record your observations below. a. Test tube 1 __________________________________________________ ____________________________________________________________ b. Test tube 2 __________________________________________________ ____________________________________________________________ 2. Write the electron configuration for the iron metal. _________________________________________________________________ 3. Which two electrons are lost to form the pale green Fe 2+ ion? _________________________________________________________________ 4. Which additional electron is lost to form the yellow Fe 3+ ion? _________________________________________________________________ 5. Other transition elements exhibit oxidation states from 2 + up to 8+. Why does iron have only the 2+ and 3+ oxidation states? _________________________________________________________________ 6. Would you predict iron to be more stable at the 2+ or 3+ oxidation states? Explain your answer. _________________________________________________________________ 54
Analysis and Conclusions answers 1. Record your observations below. a. Test tube 1 ___pale green solution forms ____________ (the Fe 2+ forms when the acid oxidizes the metal) b. Test tube 2 ____yellow solution forms______________________ (Fe 3+ dissociates in water) 2. Write the electron configuration for the iron metal. _______1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 6 ____________________________________ 3. Which two electrons are lost to form the pale green Fe 2+ ion? _______________4s 2 ________________________________________________ 4. Which additional electron is lost to form the yellow Fe 3+ ion? _______________the paired 3d electron_____________________________ 5. Other transition elements exhibit oxidation states from 2+ up to 8+. Why does iron have only the 2+ and 3+ oxidation states? ______The empty 4s and half-filled 3d sublevel form stable ions.____ 6. Would you predict iron to be more stable at the 2+ or 3+ oxidation states? Explain your answer. _____The 3+ state is more stable because it results in a half filled sublevel._ 55
Page 1 and 2:
Oakland Schools Chemistry Resource
Page 3 and 4: Nature of electrons Instructional B
Page 5 and 6: Emission and Absorption Spectra htt
Page 7 and 8: Summary • An electron absorbs hea
Page 9 and 10: State the Aufbau principle. Referen
Page 11 and 12: Here is a copy of the periodic char
Page 13 and 14: Shapes of orbitals The shape of the
Page 15 and 16: “Und” is the undiscovered inert
Page 17 and 18: The octet rule as seen on the perio
Page 19 and 20: 10. The sum of the oxidation number
Page 21 and 22: Terms and Concepts Absorbance spect
Page 23 and 24: Materials (For 24 students working
Page 25 and 26: Assessment Ideas 1. Why don’t all
Page 27 and 28: 4. Return the front target, carbon
Page 32 and 33: Electrons & Quantum Mechanics Activ
Page 34 and 35: Name:______________________________
Page 36 and 37: Tips • Clorox 2 is a commercial p
Page 40 and 41: One of the odd things that we somet
Page 42 and 43: Name ___________________ Date _____
Page 44 and 45: Flame tests observations table Ion
Page 46 and 47: Going further Paper logs soaked in
Page 48 and 49: Name___________________________ Dat
Page 50 and 51: Questions and observations Examine
Page 52 and 53: Procedure 1. Into the first large t
Page 58 and 59: Demonstraion 4: Modeling Orbitals.
Page 60 and 61: Demonstration 7: Flame Tests Absorp
Page 62 and 63: Answers to Key Questions 1. The nuc
Page 64 and 65: Counterintuitive Examples 1. Adjust
Page 66 and 67: Equipment pH paper small test tubes
Page 68 and 69: Name ______________________________
Page 70 and 71: Disposal Discussion Solutions may b
Page 72 and 73: References Beren and Brady, Laborat
Page 74 and 75: Utilizing the table below of known
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Electrons and Quantum Mechanics - Oakland Schools

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