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.
A dark purple shirt should have a dark blue tie, and a light purple shirt should have a light blue tie. Silvery white would look nice too.   Blue! A dark purple shirtâ¦ should have a dark blue tie, and a light purple shirt should have a light blue tie. Silvery white would look nice too.   Depends on what you are wearing with the Purple Shirt. It could be a darker Purple, or lighter purple, it could be black or it could be white. What ever suit you wear or sports coat, can help decide the tie color. 7 people found this useful.