CHM135H1 Chapter 8: Chemistry Review Chapter 8.docx
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CHM135H1 Full Course Notes
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Electron config: the distribution of e"s within the lvls and sublvls of its atoms. Schod equation doesn"t not give exact solutions for the energy levels of many- electron atoms (only h) But, unlike bohr model, gives excellent approximate solutions e spin quantum number (ms) N, l and ml describe size (energy), shape, and orientation of an atomic orbital. H splits because e"s has one of 2 possible values of spins. Each e in an atom is described completely by a set of 2 quantum #s: first 3 describe its orbital, fourth describes its spin. No 2 e"s in the same atom can have the same 4 quantum #s. He @ ground dad = same qn as e in h. Maj consequence: an atomic orbital can hold a max # of 2 e"s. Second he e occupies same orbital but has opposite spin and they must have opposing spins. He beam doesn"t split because have both spins.
