Bonding Flashcards
Ionic bonds
Occur between a metal cation and a nonmetal anion, and they share electrons
Formula unit
Neutral group of atoms joined by ionic bonds, and the lowest whole number ratio of ions in a compound
Chemical formula
Indicates the number and charge of the atoms in a substance
Polyatomic ions
Ions made of more than one atom
Covalent bonds
Occur between 2 nonmetals, is the sharing of electrons
Molecule
Neutral group of atoms joined by covalent bonds
Single bond
Sharing of 1 pair of electrons
Double bond
Sharing of 2 pairs of electrons
Triple bond
Sharing of 3 pairs of electrons
Metallic bonding
Occurs between 2 metals, electrons are held in the “sea of electrons”
Intermolecular forces of attraction
Attractive forces between molecules
Intramolecular forces of attraction
Attractive forces within a molecule, true chemical bonds
Dipole forces
Intermolecular forces between 2 polar molecules with dipole movements
Hydrogen bonding
Intermolecular forces between hydrogen and highly electronegative oxygen, nitrogen, or fluorine (both molecules must have dipole-dipole forces)
London dispersion forces
Weak intermolecular forces between 2 nonpolar molecules, larger mass molecules have a greater amount of this force
Van Waal’s forces
Weak and temporary intermolecular forces between molecules, assumed to be found in all molecules
VSEPR Theory
Theory that predicts shapes of compounds bases on lone electron pairs
Linear shape
Has 2 electron domains, no unbonded pairs, and 2 bonded pairs
Transonal plane shape
Has 3 electron domains, no unbonded pairs, and 3 bonded pairs
Pyramidal shape
Has 4 electron domains, 1 unbonded pair, and 3 bonded pairs
Bent shape
4/3 electron domains, 2/1 unbonded pairs, and 2 bonded pairs
Tetrahederal shape
4 electron domains, 0 unbonded pairs, and 4 bonded pairs
Binary Ionic Compound
Compound with 2 elements, ex. NaCl
Ternary Ionic Compound
Compound with 3 elements, 2 are in a polyatomic ion