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.
If you donât own a tuxedo or donât want to rent one, youâre in luck. A dark suit is also appropriate for a black tie optional dress code â appropriate colors include black, dark gray and navy. Wear a white dress shirt with a simple, muted tie to complete the black tie optional look.