Back to top . A compound undergoing decay, such as alpha decay, will break into an alpha particle and a daughter isotope. The number of digits to the right of the decimal point in a number dense A compact substance or a substance with a high density. Active only when the molecules are close together. The strengths of intermolecular attractions increase when polarity increases.
Dispersion is an intermolecular attraction force that exists between all molecules.
These forces are the result of the movement of electrons which cause slight polar moments. Dispersion forces are generally very weak but as the molecular weight increases so does their strength. When an atom is bonded to another atom by two sets of electron pairs. Back to top . E effusion Movement of gas molecules through a small opening.