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102109a - y S y Cr y Cu y At What is the maximum number of...

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Orbital Energy Levels
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Polyelectronic Elements y Z > 1 y The attractive forces between the electrons and the nucleus increase, orbits are closer to the nuclei y electron-electron repulsions are now possible
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Aufbau Principle y Assume the orbitals are “similar” to H orbits and shapes y Fill the orbitals in order of increasing energy y Write the electron configuration in subshell notation y Draw a box for each orbital y Each orbital (box) can hold 2 electrons, the 2 electrons must have opposite paired spins (Pauli Exclusion Principle) y Within a subshell the electrons are spread out and line up their spins as much as possible (Hund’s Rule)
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Orbital Diagrams y B y C y N y O y F y Ne
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Filling Orbitals
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Writing Electron Configurations
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Unformatted text preview: y S y Cr y Cu y At What is the maximum number of electrons in an atom that can have n = 4? 2 8 1 32 2% 48% 25% 26% 1. 2 2. 8 3. 18 4. 32 What is the maximum number of electrons in an atom that can have n = 2, l = 1, m l = -1, m s = -1/2? 1 2 6 8 25% 15% 38% 22% 1. 1 2. 2 3. 6 4. 8 How many electrons are unpaired in the ground electron configuration of oxygen? 1 2 3 4 6% 10% 9% 2% 73% 1. 2. 1 3. 2 4. 3 5. 4 Which of the following represents an excited state of neutral F? 1 s 2 s2 p6 1s22s p 43s1 22p 5 3 4 18% 14% 21% 47% 1. 1s 2 2s 2 2p 6 2. 1s 2 2s 2 2p 4 3s 1 3. 1s 2 2s 2 2p 5 3s 1 4. 1s 2 2s 2 2p 4...
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