CHEM 6A Chapter Notes - Chapter 4: Fark, Electron Microscope, Radiography
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7 Mar 2018
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4. 1 first ionization energy is one of many periodic properties of the elements. Ionization energy: minimum energy required to remove electron neutral gas atom. First ionization energy ( 1(cid:4667): minimum energy required to remove electron from. Second ionization energy ( 2(cid:4667): minimum energy required to remove an electron from gaseous +ion to produce 2+ Electronic structures of noble gas atoms are more stable. Each preceding energy to be greater removing electron take a lot of energy. Noble gases have large ionization energies difficult to remove electron. Alkali metals have relatively low ionization energies. 4. 2 the values of successive ionization energies of atoms suggest a shell structure. First ionization 3. 94 aj greater than hydrogen atom of 2. 18 aj. Second ionization 8. 27 aj 2 times first one uses more energy to remove this electron. Large energy difference between shells more easy to detach. Outer shell: one through to eight electrons. Inner core electron more like neon atom than helium atom.
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