Chemistry Chapter 8 Covalent Bonding
8.1 Molecular Compounds 8.2 The Nature of Covalent Bonding 8.3 Bonding Theories 8.4 Polar Bonds and Molecules
Terms in this set (31)
Bond dissociation energy
the energy required to break the bond between two covalently bonded atoms
A molecular orbital that can be occupied by two electrons of a covalent bond.
A bond formed by the sharing of electrons between atoms.
Coordinate covalent bond
A covalent bond in which one atom contributesboth bonding electrons.
A molecule consisiting of two atoms.
Intermolecular forces resulting from attraction of oppositely charged regions of polar molecules.
A molecule that has two poles, or regions with opposite charges.
Valence shell electron pair repulsion theory; because electron pairs repel, molecules adjust their shapes so that valence electron pairs are as far apart as possible.
Van der Waals Forces
The two weakest intermolecular attractions- dispersion interactions and dipole forces.
A pair of valence electrons that is not shared between atoms.
Triple covalent bond
A covalent bond in which three pairs of electrons are shared by two atoms.
A bond angle of 109.5 degrees that results when a central atom forms four bonds directed toward the center of a regular tetrahedron.
A chemical formula that shows the arrangement of atoms in a molecule or a polyatomic ion, each dash between a pair of atoms idicates a pair of shared electrons.
Single covalent bond
A bond formed when two atoms share a pair of electrons
A bond formed when two atomic orbitals combine for form a molecular orbital that is symmetrical around the axis connectiong the two atomic nuclei.
one of the two or more equally valid electron dot structures of a molecule or polyatomic ion
A tightly bound group of atoms that behaves as a unit and has a positive or negative charge
Attraction between molecules caused by the electrons motion on one molecule affecting the electron motion on the other through electrical forces; these are the weakest interactions between molecules.
Double covalent bond
A bond in which two atoms share two pairs of electrons.
The mixing of several atomic orbitals to form the same total number of equivalent hybrid orbitals.
Attractive forces in which a hydrogen covalently bonded to a very electronegative atom is also weakly bonded to an unshared election pair of another electronegative atom.
A compound that is composed of molecules.
A chemical formula of a molecular compound that shows the kinds and numbers of atoms present in a molecule of a compound
An orbital that applies to the entire molecule
a neutral group of atoms joined together by covalent bonds
A molecule in which one side of the molecule is slightly negative and the opposite side is slightly positive.
A solid in which all of the atoms are covalently bonded to each other
Nonpolar covalent bond
A covalent bond in which the electrons are shared equally by the two atoms
A covalent bond in which the bonding electrons are most likely to be found in sausage-shaped regions above and below the bond axis of the bonded atoms
A molecule in which one side of the molecule is slightly negative and the opposite side is lsightly positive.
Polar covalent bond
A covalent bond between atoms in which the electronsa are shared unequally
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