10-12-07%20-%20Lecture%206%20-%20Chapter%201

10-12-07%20-%20Lecture%206%20-%20Chapter%201 - f Orbitals...

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f Orbitals f Orbitals When n = 4, = 0, 1, 2, 3 so there are 4 subshells in the shell. For = 0, m = 0 s subshell with single orbital (4s) For = 1, m = -1, 0, +1 p subshell with 3 orbitals (4p) For = 2, m = -2, -1, 0, +1, +2 d subshell with 5 orbitals (4d) For = 3, m = -3, -2, -1, 0, +1, +2, +3 f subshell with 7 orbitals (4f)
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f-orbitals
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Electron Spin Quantum Number, m Electron Spin Quantum Number, m s s Electron spin can be measured experimentally. Electron spin can be measured experimentally. Two spin directions are given by Two spin directions are given by m m s where m where m s = +1/2 and -1/2. = +1/2 and -1/2.
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Orbital Energies
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Electron Electron Filling Filling Order Order
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Transition Element Transition Element Configurations Configurations 3d orbitals used for Sc-Zn
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[Ar] 3d 5 4s 1 Cu [Ar] 3d 10 4s 1 The neutral atom has a lower total energy if the d orbital is half-full (d 5 ) or full (d 10 ) An electron from the full s orbital will transfer to the d orbital in order for this to happen. Filling Order Exceptions
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10-12-07%20-%20Lecture%206%20-%20Chapter%201 - f Orbitals...

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