chemical formalism
simplified scientific model that predicts some aspect of chemical behavior
bond order
formal measure of covalent bond strength: difference between the number of electron pairs in bonding and antibonding molecular orbitals
covalent radius
measure of the size of an atom that forms part of one covalent bond
atomic radius
any measure of the size of atoms
formal charge
number of valence electrons of an atom in isolation
oxidation number
number that describes degree of oxidation of an atom in a chemical compound; the hypothetical charge that an atom would have if all bonds to atoms of different elements were fully ionic
kinetic diameter
measurement of atomic or molecular size w.r.t. collisions in molecular physics