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.
The Dark Knot Tip: What really looks sharp is to pick a tie with a hint of the shirt color in it. So, if you are wearing a pink shirt and opting for a navy blue tie, a navy blue tie with a hint of pink in it will help to bring the shirt-tie combination together.