Term
|
Definition
| a bond in which two atoms share a pair of electrons |
|
|
Term
|
Definition
| chemical formulas that show the arrangement of atoms in molecules and polyatomic ions |
|
|
Term
|
Definition
| pairs of valence electrons that are not shared between atoms |
|
|
Term
|
Definition
| bonds that involve two shared pairs of electrons |
|
|
Term
|
Definition
| bonds that involve three shared pairs of electrons |
|
|
Term
|
Definition
| a covalent bond in which one atom contributes both bonding electrons |
|
|
Term
|
Definition
| the total energy required to break the bond between two covalently bonded atoms |
|
|
Term
|
Definition
| structures that occur when it is possible to write two or more valid elctron dot formulas that have teh same number of electron pairs for a molecule or ion |
|
|
Term
|
Definition
| substances in which all of the electrons are paired |
|
|
Term
|
Definition
| substances that contain one or more unpaired electrons |
|
|
Term
|
Definition
| orbitals that apply to the entire molecule |
|
|
Term
|
Definition
| a molecular orbital with an energy that is lower than that of the atomic orbitals from which it formed |
|
|
Term
|
Definition
| a molecular orbital with an energy that is higher than that of the atomic orbitals from which it formed |
|
|
Term
|
Definition
| when two atomic orbitals combine to form a molecular orbital that is symmetrical along the axis connecting two atomic nuclei |
|
|
Term
|
Definition
| the bonding electrons are most likely to be found in sausage-shaped regions above and below the bond axis of the bonded atoms |
|
|
Term
|
Definition
|
|
Term
|
Definition
| states that because electron pairs repel, molecular shape adjustsso the valence-electronpairs are as far apart as possible |
|
|
Term
|
Definition
| several atomic orbitals mix to form the same total number of equivalent hybrid orbitals |
|
|
Term
|
Definition
| when the atoms in the bond pull equally and the bonding electrons are shared equally |
|
|
Term
| polar covalent bond (polar bond) |
|
Definition
| when a covalent bond joins two atoms of different elements and the bonding electrons are share unequally |
|
|
Term
|
Definition
| one end of the molecule is slightly negative and the other end is slightly positive |
|
|
Term
|
Definition
| a molecule that has two poles |
|
|
Term
|
Definition
the weakest molecular attractions
collectively named |
|
|
Term
|
Definition
the weakest of all molecular interactons
caused by the motion of electrons |
|
|
Term
|
Definition
| occurs when polar molecules are attracted to one another |
|
|
Term
|
Definition
| attractive forces in which a hydrogen covalentlybonded to a very electronegative atom is also weakly bonded to an unshared electron pair ofanother electronegative atom |
|
|
Term
|
Definition
| solids in which all of the atoms are covalently bonded to each other |
|
|
