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Bohrs Atomic Model

Bohrs Atomic Model Scientist Neils Bohr gave some corrections to Rutherford's atomic model in 1913. This corrected model is called the Bohr's atomic model. The main postulates of this model are - a) The electron moves around the nucleus in a circular motion, about an axis. This circular motion is called an energy level or orbit. They are also known as the shell or permanent orbit or principal energy level. Electrons do not absorb or emit any energy when they revolve these fixed orbits. If we express the permanent orbit as n, then n = 1, 2, 3, 4, etc.  In other words, if n = 1, the principal energy level is K,  when n = 2, L is the principal energy level,  when n = 3, M is the principal energy level,  when n = 4, N is the principal energy level, etc. b) According to Bohr's model, the angular momentum of an electron in an energy level is mvr =  nh / 2𝜋 . Here, m = the mass of the electron (9.11×10 -31  kg) r = the radius of the orbit that the electron follows v = the veloc

How to be a good student

How to be a good student

First, we should have a daily routine of studies. Then, we have to prepare our lessons according to our routine. We must study regularly. Next, we have to listen to what our teachers say in class. It is necessary to read every subject thoroughly. After that, we will select the possible questions and write the answers to them. We will get them corrected and then learn them by heart. Finally, we must revise them and write them at home. If anyone does all the above-mentioned things in a proper way, he or she will be a good student.

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