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19 Cards in this Set
- Front
- Back
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What are the two types of chemical bonds?
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ionic and covalent
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What are the four quantum numbers?
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n, l, m(sub l), m(sub s)
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What property of an atomic orbital does the n quantum number describe?
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the size of the atomic orbital
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What property of an atomic orbital does the l quantum number describe?
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The shape of the atomic orbital
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What property of an atomic orbital does the m(sub l) quantum number describe?
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The orientation of atomic orbitals
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What is a node?
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An area where the probability of finding an electron is zero.
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How many lobes and nodes does a p orbital contain?
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Two lobes and one node
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What are molecular orbitals?
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The mathematical descriptions of orbitals obtained by adding the wave functions of the atomic orbitals.
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When does a pi bond occur?
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When two p orbitals overlap in a parallel fashion
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When does a double bond occur?
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When both a sigma and a pi bond exist between two atoms
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Can a pi bond exist independently of a sigma bond?
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No
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Which is stronger: a pi bond or a sigma bond?
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A sigma bond
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What is orbital hybridization?
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the concept of mixing atomic orbitals to form new hybrid orbitals suitable for the qualitative description of atomic bonding properties
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How is sp3 hybridization accomplished?
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sp3 hybridization is accomplished by promoting one of the 2s electrons into the 2 (sub p (sub z)) (2pz); this produces four valence orbitals, each with one electron
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What is the bond angle in an sp3 hybridized molecule?
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109.5 degress
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What is the bond angle in an sp2 hybridized molecule?
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120 degrees
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What is the bond order for an sp hybridized molecule?
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Triple
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How many sigma and pi bonds does an sp2 hybridized molecule have?
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1 sigma bond and 1 pi bond
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What are the four classes of hydrocarbons?
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alkanes, alkenes, alkynes, and aromatics
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