The atoms form positive and negative ions which attract to each other. Ionic compounds are composed of large numbers of positive ions (cations) and negative ions (anions) so that the amount of positive charge equals the negative charge. In covalent bonds the electrons are shared between two bonded atoms.
4. Try doing a gradation of color by selecting a shirt and tie that are the same color, but in lighter or darker shades. For example, pair a light blue dress shirt with a medium blue tie. 5. For business interviews and important meetings, keep your tie color classic and conservative.
Tie color is one of the best ways to convey your personality through fashion. Learn also how to match your tie and shirt. Whether you are aware of it or not, the color of your tie can influence the people around you. So before tying that knot in the morning, consider what personality traits you are conveying through the color of your tie.