Theories explaining the covalent bond The concept of the covalent bond developed according to our knowledge about the electron properties, from the theories that are explaining the formation of the covalent bond are: The...
The most stable atoms are those of noble gases such as helium , neon , argon …..etc , Because their outermost energy level is completely filled with electrons , so , the atoms of...
Quantum numbers The mathematical solution of Schrodinger’s equation introduced four numbers that were called quantum numbers , to determine the energy of an electron in multi-electron atoms , we should know the four quantum...
Matter is composed of atoms , These atoms show the physical and chemical properties of the matter , By the end of the nineteenth century , Scientists had become sure that electrons are from...
