Atomic Combinations Flashcards
Chemical bond
A mutual attraction between two atoms resulting from the simultaneous attraction between their nuclei and the outer electrons
Lewis dot diagram (electron dot formula)
A structural formula in which valence electrons are represented by dots or crosses
Valence electrons or outer electrons
Are the electrons in the highest energy level of an atom in which there are electrons
Covalent bond
The sharing of electrons between two atoms to form a molecule
Molecule
A group of two or more atoms covalently bonded and that function as a unit
Bonding pair
As a pair of electrons that is shared between two atoms in a covalent bond
Lone pair
A pair of electrons in the valence shell of an atom that is not shared with another atom
Coordinate/dative covalent bonding
A description of covalent bonding that occur between two in which both electron shared in the bond come from the same atom
Valence shell electron pair repulsion (vsepr theory)
VSEPR is a model in chemistry used to predict the shape of individual molecules
Electronegativity
A measure of the tendency of an atom in a molecule to attract bonding electrons
Non-polar covalent bond
A bond in which the electron density is shared equally between the two atoms
Polar covalent bond
A bond in which the electron density is shared unequally between the two atoms
Bond energy
The energy needed to break one mole of its molecules into separate atoms
Bond length
The average distance between the nuclei of two bonded atoms
Chemical bonds
~metallic bonding
~covalent bonding
~ionic bonding
