CHM135H1 Chapter Notes - Chapter 5: Atomic Radius, Effective Nuclear Charge, Atomic Number
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CHM135H1 Full Course Notes
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Chapter 5: periodicity and the electron structure of atoms. Wavelength (lambda) is distance between successive wave peaks. Frequency (v) is number of wave peaks that pass a given point per unit time. Amplitude is height of wave max from center. Photoelectric effect irradiation of a clean metal surface with radiant energy above a threshold frequency causes electrons to be emitted. When light is through atom, light splits into line spectrum that is unique to each element. Heisenberg uncertainty: can never know location of electron. N= principal quantum number, energy shell and orbital that electron occupies. Ml= magnetic quantum number defines spatial orientation of orbital. Shapes of orbitals s orbitals are spherical p orbitals are dumbbell-shaped d and f orbitals have complex shapes , 5 d orbitals pauli exclusion principle: no two electrons can have the four quantum numbers. Anomalous configuration anomalies: unusual stability of both half-filled and fully filled shells.
