Ionic, covalent, hydrogen bonds, and Van Der Waals interactions are the four types of bonding. Strong ionic and covalent bonds take more energy to break apart. A positive ion is generated when an element donates an electron from its outer shell.Because positive and negative charges attract, ions stick together to create an ionic bond. The electrons from one element bond with the other element. An electron from the sodium atom stays with the other seven electrons from the chlorine atom, resulting in a net-zero charge ion lattice when Na+ and Cl– ions combine to produce NaCl.