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.
When it comes to dress shirts, white, the most neutral color of all, is the easiest color to work with, as it goes with nearly all ties and suits. Other mild, pale shades of color, especially light blue, are also highly versatile and offer a variety of options when it comes to ties.