Words Flashcards
(29 cards)
A neutral group of atoms joined together by covalent bonds
Molecule
A molecule that contains 2 atoms
Diatomic molecule
A compound composed of molecules
Molecular compounds
The chemical formula of a molecular compound
Molecular Formula
Two atoms held together by sharing one pair of electrons are joined by a…
Single Covalent Bond
Represents the covalent bonds as dashes and shows the arrange,ent of covalently bonded atoms
Structural Formula
A pair of valence electrons that is not shared between atoms
Unshared Pair
A bond that involves two shared pairs of electrons
Double Covalent Bond
A bond formed by sharing three pairs of electrons.
Triple Covalent Bond
A covalent bond in which one atom contributes bith bonding electrons
Coordinate Covalent Bond
A tightly bond group of atoms that has a positive or negative charge and functions as a unit
Polyatomic Ion
The energy required to break the bond between two covalently bonded atoms
Bond Disassociation Energy
Structures that occur when it is possible to draw two or more valid electron dot structures that have the same amount of electron pairs for a molecule or ion.
Resonance Structures
Orbitals that apply to the entire molecule
Molecular Orbitals
A molecular orbital that can be occupied by two electrons of a covalent bond
Bonding Orbital
When two atomic orbitals combine to form a molecular orbital that is symmetrical around the axis connecting two atomic nuclei, a _____
is formed. The orbitals in this type of bond overlap end to end.
Sigma Bond
In some molecules, orbitals can overlap side-by-side. The side-by-side overlap of atomic p orbitals produces what are called ____ molecular orbitals. When a ____ molecular orbital is filled with two electrons, a ____ bond results. In this bond, the bonding electrons are most likely to be found in two sausage-shaped orbitals above and below the bond axis of atoms; weaker than sigma bond.
Pi Bond
In this molecular arrangement, all the bond angles are 109.5*. Four corners of a regular geometric solid.
Tetrahedral Angle
States that the repulsion between electron pairs causes molecular shapes to adjust so that the valence-electron pairs stay as far apart as possible.
VSEPR Theory
In this process, several atomic orbitals mix to form the same total number of equivalent hybrid orbitals
Hybridization
When the atoms in a covalent bond pull equally (as occurs when identical atoms are bonded), the bonding electrons are shared equally, and each bond formed is a ________.
Nonpolar Covalent Bond
A covalent bond between atoms in which the electrons are shared unequally.
Polar Covalent Bond/ Polar Bond
A molecule that has two poles
Dipolar molecule (dipole)
The two weakest intermolecular attractions—dispersion interactions and dipole forces.
Van der Waals Forces
