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27 Cards in this Set
- Front
- Back
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Orbital
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Region if space around an atoms nucleus where an electron may exist a
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According to bonding theory, valence electrons are classified in terms of ...
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Orbital occupancy
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Orbital occupants: 0, 1, 2
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Empty, half filled, full
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Bonding electron
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Atom with a valence orbital that has a single electron and can share that electron with another atom
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Lone pair
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Full valence orbital (2e-'a)
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Bonding electron
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Atom with a valence orbital that has a single electron and can share that electron with another atom
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4 rules of bonding theory
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1. First energy level has room for only one orbital 2. Energy leeks above the first have room for four orbitals (8e-) 3. An orbital can be unoccupied or may contain one or two electrons but never more than two 4. Electrons "spread out" to occupy any empty valence orbitals before forming electron pairs
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B is happy with ?
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3 bonding electrons
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s can have
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6 bonding electrons
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B is happy with ?
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3 bonding electrons
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B is happy with ?
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3 bonding electrons
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s can have
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6 bonding electrons
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P is happy with
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5 bonding electrons
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Who is responsible for the octet rule ?
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Gilbert Lewis
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Lewis reasoned that
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All atoms strive to be like the nearest noble gas
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Electronegativity
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Measure if the force that an atom exerts on electrons of other atoms ( the pull on bonding electrons)
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The larger the EN number the weaker the "pulling" force. T or F
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FALSE. The larger the number the greater
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What does EN do from left to right on the periodic table?
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Increases
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What does EN do as you move down a group
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Decreases
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Non metals have ____ EN
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high
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Chemical bond
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Competition for bonding electrons
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Chemical bond
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Competition for bonding electrons
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Non polar covalent bond
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Both have high EN
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Metallic bond
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Both have a low EN
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Polar covalent bond
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Unequal EN
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Ionic bond
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Unequal EN
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Electrons shared equally when
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Atoms have equal EN
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