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प्रश्न
Give the postulates of Bohr's atomic model
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उत्तर
Atom has a central nucleus surrounded by electrons.
The electrons revolve around the nucleus in definite circular paths called orbits.
Each orbit has fixed energy. Therefore, these orbits are also known as energy levels or energy shells.
These orbits or energy levels are represented either by a number 1, 2, 3,... known as the principal quantum number (n) of the orbit or by K, L, M,....
There is no change of energy of electrons as long as they keep revolving in the same energy level and the atom remains stable. Electrons can jump from the higher orbit to the lower orbit when they lose energy and jump to the next when they gain energy.
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संबंधित प्रश्न
Describe Bohr’s model of the atom.
Compare all the proposed models of an atom given in this chapter.
Name the scientists who described the arrangement of electrons in an atom.
What are the various letters used by Bohr to represent electron shells in an atom?
In the figure given alongside
(a) Name the shells denoted by A,B, and C. Which shell has least energy
(b) Name X and state the charge on it
(c) The above sketch is of …………. Model of an atom
State true or false. If false, correct the statement.
Smaller the size of the orbit, lower is the energy of the orbit.
Explain the postulates of Bohr’s atomic model.
Niels Bohr was Born on ______.
What are the Limitations of Bohr’s Model?
The atomic model based on quantum theory was first proposed by ______.
