Bohr Atomic Model: Postulates, Distribution of electrons, Videos...Bohr model of the atom
The potential and energy of electrons are always moving around the nucleus.They can only have certain values of energy.The author of the theory should be given credit.
The way electrons move about the nucleus is similar to the way planets move around the sun.There are different energy levels associated with the different orbits.The diagram shows the model for fluorine.There are 9 protons in the nucleus of fluorine.There are 9 electrons surrounding the nucleus.The electrons are arranged in 3 different ways.
3.Two of the three electrons go into the first energy level.The electron goes into the second level.The valence electron is an electron in the outer energy level.The core electrons are the two electrons in the first energy level.