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10 Cards in this Set
- Front
- Back
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Cannizaro
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method of measuring atomic mass
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Mendeleev
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periodic table by atomic mass
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Moseley
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used atomic number instead of mass
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Key Factors
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number of protons (attraction)
distance from nucleus (energy levels) |
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Atomic Radius
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1/2 the distance between nuclei of adjacent atoms of the same element
p- right g- up |
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Ionization
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energy needed to remove 1 e-
p- left g- down |
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Electron Affinity
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attraction needed for an additional 1 e-
p - right g - up |
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Ionic Radius
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1/2 the distance between nuclei of adjacent ion of the same element
p - right g- up |
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Electronegativity
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attraction from valence e- to adjacent atom
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Group Names
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Noble Gases- Group 18, inert gases
Halogens - Group 17, most reactive non-metal Lanthanides - Atomic #s 58-71, rare earth Actinides -#90-103 Alkaline metals - Group 1 highly reactive Alkaline earth metals - Group 2, pretty reactive |
