Now, we can draw the Bohr model of the Lithium atom with the help of this information. Lithium has electronic configuration 2s 1.The information that we can derive from the above-mentioned Lithium box is as follows: Lithium belongs to group 1 and period 2 of the periodic table. The Lithium atom consists of 3 protons and 4 neutrons in the nucleus, and 3 electrons revolve around the Lithium atom in 2 shells i.e. The electron that absorbs energy jumps upwards while the electron that loses energy jumps downward The electrons are also capable of jumping up and down from their orbits into the higher or lower orbit, respectively. Similarly, the electrons housed in the shell farthest from the nucleus (here, the name of the shell may differ with the type of atom) have the highest energy and are called, valence electrons, while the shell is known as the valence shell the K shell are said to be in the ground state, similar to their assigned shell they also carry maximum energy out of all the electrons. The electrons located in the shell nearest to the nucleus i.e. The electron carrying capacity of the shell also increases outwards The innermost shell is assigned the lowest value which increases outwards i.e. The shells are also given names in numerological as well as alphabetical order. Usually, the smallest shell, located nearest to the atom has the least energy while the largest and farthest shell has maximum energy. These are pre-determined paths and have fixed energies associated with them due to which they are also known as energy levels. Shells: The electrons move around the atoms in their orbits, known as shells.They are not stagnant like other atomic particles and circulate around the nucleus. Electrons: The only type of atomic particles present outside the nucleus in the atomic space.Neutrons: These are also located inside the nucleus but are charge-neutral species.Protons: These are located inside the nucleus and confer a positive charge to it.The other atomic particles present in the nucleus are neutrons. It exhibits a positive charge owing to its constituent particles i.e. Nucleus: It is the heart or core of the atom.The pictorial representation also illustrates the mass number and the atomic number of the atom.īefore we move forward with the Bohr model of Lithium, I would like to describe a few terms that would help you have a better insight into the structure. The Bohr model describes the structure of the atom defining the place and charge of all the atomic species.

the Bohr-Rutherford model explained that the electrons are the moving particles that revolve around the nucleus in a definite circular orbit that has fixed energy and size. The earlier model could not provide the reason for the stability of electrons revolving around the nucleus and hence, could not keep up with the laws of classical mechanics and electromagnetic theory. This model was actually the upgraded version of the earlier model proposed by Ernst Rutherford in 1911. The Bohr model of the atoms or more precisely, the Bohr-Rutherford model was proposed by Ernst Rutherford and Niel Bohr in 1913.

Bohr model of potassium atom