Chp3 - Chapter 3 Exercises Periodic Trends Problems 5-17...

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Chapter 3 Exercises Periodic Trends Problems 5-17 (odd) Effective Nuclear Charge Problems 3, 21, 23
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Chapter 3: Atomic Structure and Properties Relate Electrons to Periodicity Predict Atomic Sizes Ionization Energy Magnetic Properties of Atoms
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Valence vs. Core Valence electrons outermost s electrons and any partially filled subshells involved in bonding loosely bound to nucleus Core electrons innermost electrons; filled subshells (except outermost s subshell) unchanged during chemical reaction tightly bound to nucleus
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1 s 2 s 2 p 3 s 3 p 4 s 3 d 4 p E AO Energy Level Diagram Valence electrons Phosphorus Core electrons
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Valence Electron Configuration *write electrons after previous noble gas* s-block – ns # Na 3s 1 Ca 4s 2 p-block – ns 2 np # (d-block filled) P 3s 2 3p 3 I 5s 2 5p 5
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Exceptions Noble gases – filled s and p orbitals Group 6B – Cr (4s 1 3d 5 ) Group 1B - Cu (4s 1 3d 10 ) Group 2B – Zn (4s 2 )
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3p 3s 2p 2s 1s Complete the Following:
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Chp3 - Chapter 3 Exercises Periodic Trends Problems 5-17...

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