All completely filled shells underneath the valence shell . A point, region, or surface where the amplitude of a standing wave is zero. The probability of finding an electron at an orbital node is zero. A nonelectrolyte is a substance which does not ionize in solution. A nonmetal is a substance that conducts heat and electricity poorly, is brittle or waxy or gaseous, and cannot be hammered into sheets or drawn into wire.
Nonmetals gain electrons easily to form anions .
Having a relatively even or symmetrical distribution of charge. A molecule in which the center of positive charge and the center of negative charge coincide. Compare with molarity and equivalent . A measure of solution concentration, defined as the number of equivalents of solute per liter of solution. Energy needed to break an atomic nucleus into separate protons and neutrons.