A chemical reaction and its relation with energy of the system and orbital structure of the atom

In a system where different atoms are available for a successful reaction. But only then reaction is possible when two or more atoms will closer to each other. If ayoms places in different position, it is not possible to make a succrssful reaction. Getting aproaches of the atom to each other in the system decreases the energy ofthe energy of the total system. Distance between the atoms are decreased with the decreasing of the total energy of the system. Innert gases do not undrgo in chemical reaction because their all of the orbitals are filled completely. Half filled orbital can undergo in chemical reaction due to they tends to fill completely their orbital structure.