CHEM 1A03 Chapter Notes - Chapter Unit 5 Module 1: Coordinate Covalent Bond, Stoichiometry, Ionic Bonding

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: Lydia Chen

Document Summary

Usually occurs between a metal and a non-metal and involves the transfer of electrons from one atom to another. Electrons are shared because both atoms are trying to complete their octets. Coordinate covalent bond is a special type of covalent bond that involves one of the atoms providing both of the electrons to form a bond. Ex: when ammonia reacts with a proton h+ results in ammonium cation. In this case all of the bonds appear equivalent and there is no way to distinguish which bond is the coordinate covalent bond. Covalent bonds with an uneven sharing of electrons are known as polar covalent bonds. Direction electrons are being pulled in is indicated using a polar arrow and partial charges. In a polar bond, the electrons are pulled towards the more polar atom. Type of bond formed between 2 atoms is dictated by the difference in electronegativity between the. Intermediate polar (pcl5: very small/zero covalent (cl2)