GCSE OCR 21st Century Covalent bonds Dot and cross diagram A covalent bond is a shared pair of electrons. Covalent bonding results in the formation of molecules. Simple molecular substances have ...

GCSE CCEA Double Award Bonding - (CCEA) Dot and cross diagrams to show formation of ions Atoms and ions bond with each other in three main ways – ionic bonds, covalent bonds and metallic bonds.