GEOL 103 Lecture Notes - Lecture 7: Ionic Bonding, Calcite
Document Summary
The loss or gain of electrons (or the need to fill or empty shells) Remember, atoms want to be electrically neutral. Thus, ions (charged atoms) will bond with one another forming compounds. Or atoms may bond by sharing electrons in order to ll outer shells. Na is in the rst column and has one unpaired electrons in outer shell. Cl is in second to last column and it needs only one electron to complete the shell. Na readily gives up the electron and becomes na+ Cl readily gains an electron and becomes cl- Ionic bonding: atoms attracted by opposite electrical charge. Na+ + cl- = nacl sodium chloride, or salt. As a crystalline solid, geologists term this the mineral halite. This compound has a net charge = 0. In other cases, electrons are shared between atoms to ll shells. Ionic bonding - electrostatic forces, can be broken, example: dissolving salt in water.
