Three-center two-electron bond
Electron-deficient chemical bond where three atoms share two electrons
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Intramolecular force
Type of atomic bonding
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Delta bond
Type of chemical bond
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Double bond
Chemical bond involving four bonding electrons; has one sigma plus one pi bond
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Chemical specificity
Ability of biomolecules to bind specific ligands
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Halogen bond
Net attractive interaction involving one of the halogen elements
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Bond cleavage
Splitting of a chemical bond
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Antibonding molecular orbital
Molecular orbital which weakens chemical bonding
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Covalent bond
Chemical bond by sharing of electron pairs
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Effective nuclear charge
Measurement in atomic physics
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Cation–π interaction
Noncovalent molecular interaction
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Bent bond
Type of covalent bond in organic chemistry
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Electron deficiency
Species that violate the octet rule or have electron-acceptor properties
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Donor number
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D-block contraction
Reason behind some elements' anomalous behaviour
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Non-bonding orbital
Molecular orbital
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Lone pair
Pair of valence electrons which are not shared with another atom in a covalent bond
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Network covalent bonding
Type of chemical bonding
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Metallophilic interaction
Non-covalent attraction between heavy metal atoms
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Keating model
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Isopeptide bond
Type of chemical bond between 2 amino acids
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Sextuple bond
Covalent bond involving 12 bonding electrons
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Pi bond
Type of chemical bond
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Quadruple bond
Chemical bond involving eight electrons
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Quintuple bond
Chemical bond involving ten bonding electrons
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Ligand bond number
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Low-barrier hydrogen bond
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Octet rule
Chemical rule of thumb
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Molecular orbital diagram
Visual tool in quantum chemistry
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Valence electron
Electron in the outer shell of an atom's energy levels
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Symmetric hydrogen bond
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Single bond
Chemical bond between two atoms
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Strain energy
Elastic potential energy gained by a material under tensile or compressive stress
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Three-center four-electron bond
Model of chemical bonding in which three atoms share four electrons
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Triple bond
Chemical bond involving six bonding electrons; one sigma plus two pi bonds
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Mesomeric effect
Chemical polarity due to interactions between pi bonds or lone pairs
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Carbon–nitrogen bond
Covalent bond
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Lanthanide contraction
Decrease of ionic radii across the lanthanide series
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Kapustinskii equation
Formula for lattice energy
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Delocalized electron
Electrons that are not associated with a single atom or covalent bond
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Sigma bond
Covalent chemical bond
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Intimate ion pair
Lasting attraction between dissolved cations and anions in solution
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Double bond rule
Chemistry rule of thumb
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Formal charge
Hypothetical charge assigned to an atom in a molecule based on its valence shell
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Metallic bonding
Type of chemical bond in metals
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