C1403.2006._POST.Week_Three.2.1

C1403.2006._POST.Week_Three.2.1 - Olive Trees Braque...

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Braque Matisse Renoir Van Gogh Monet Olive Trees
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Ionization Energy • Measure of the effort needed to remove electron(s) from a ground state atom: – Values are positive – Obtained by photoelectron spectroscopy X + h ν X + + e - Δ E = IE 1 – Second ionization energy always exceeds first X X + + e - Δ E = IE 1 X + X 2+ + e - Δ E = IE 2
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Ionization Energy Second Period Elements of the Periodic Table Stability generally increases with the number of electrons in the outer shell but the manner of filling is important Li Be B C N O F Ne Volts 5.39 9.33 8.32 11.26 14.55 13.61 17.42 21.56 L shell s 1 s 2 s 2 p 1 s 2 p 2 s 2 p 3 s 2 p 4 s 2 p 5 s 2 p 6
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Ionization Energy The Alkali Metal (IA) Family of Elements Reactivity increases with the number of shells shielding the electrons in the valence shell IA Family Volts Valence Shell Li 5.39 2s 1 Na 5.14 3s 1 K 4.34 4s 1 Rb 4.18 5s 1 Cs 3.89 6s 1 DEMONSTRATIONS • Mg REDUCTION OF H 2 O • RELATIVE REACTIVITY of Li, Na, and K (with water) (phenolphthalein is an acid-base indicator)
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Electron Affinity Energy released as an electron is captured by an atom: X +
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This note was uploaded on 04/16/2008 for the course CHEM 1403 taught by Professor Leornardfine during the Fall '07 term at Columbia.

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C1403.2006._POST.Week_Three.2.1 - Olive Trees Braque...

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