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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 make Mango Pickle.

How to make Mango Pickle.

Mango pickle is delicious food. We can easily prepare it at our homes. It is prepared through a number of steps. At first, some green mangoes are bought from the market. Then they are sorted and the rotten ones are rejected. After that, the good ones are cleaned and cut into pieces. Thereafter, these cut pieces are drilled for some time in the sun. Meanwhile measured spices, salt, mustard oil, chilies, and vinegar are mixed up with the pieces of mangoes. Then these mixed-up pieces of mangoes are kept in a big flat spot in the sun for some days. Now mango pickle is ready and it is poured into jars for storage.

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