Chapter 10 Modern Atomic Theory and the Periodic Table

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1924 de Broglie all objects have wave propertiesfor small objects such as an electron, the waveproperties become significant1926 Schrödinger Schrödinger equationa mathematical model that described electronsas wavesthe probability of finding an electron in a certainregion around the atom can be determinedwave mechanics or quantum mechanicsforming the basis for our modern understandingof atomic structurewe cannot locate an electron precisely within anatomelectrons are not revolving around nucleus inorbits as Bohr postulatedorbital a region where a high probability offinding a given electron6
10.4 Energy levels of electronBohr the energy of the electron is quantizedthe electron is restricted to only certainallowed energieswave-mechanics also predicts discrete principalenergy levels within the atomthese energy levels aredesignated by the letter nn: positive integeras n increases, the energy of the electronincreases, and the electron is found on averagefarther from the nucleuseach principal energy levelis divided into sublevelsn = 1n = 2n = 31 sublevel2 sublevels3 sublevelseach of these sublevels contains space forelectrons called orbitals7
Page 2 and 3: 10.1 A brief history10.1 A brief hi
Page 4 and 5: 10.3 The Bohr atomat high temperatu
Page 8 and 9: n = 1 1s orbital spherical shapethe
Page 12 and 13: valence electrons - the electrons u
Page 14 and 15: the valence electron configurations
Page 16: groups of elements show similar che

Chapter 10 Modern Atomic Theory and the Periodic Table

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