Edexcel A Level Chemistry:复习笔记1.4.5 Covalent Bonding Overview

• Covalent bonding occurs between two non-metals
• A covalent bond involves the electrostatic attraction between nuclei of two atoms and the bonding electrons of their outer shells
• No electrons are transferred but only shared in this type of bonding

The positive nucleus of each atom has an attraction for the bonding electrons shared in the covalent bond

• Non-metals are able to share pairs of electrons to form different types of covalent bonds
• Sharing electrons in the covalent bond allows each of the 2 atoms to achieve an electron configuration similar to a noble gas
  • This makes each atom more stable

   

Covalent Bonds & Shared Electrons Table