what was bohr's postulate on revolution of electron in the orbits of the atom
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Bohr stated that each energy level is associated with fixed amount of energy, the shell nearest to the nucleus having minimum amount of energy and the one farthest from the nucleus having the maximum energy There is no chance in the energy of electrons as they keep revolvingin the same shell and atom remains stable.
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Postulates Of Bohr's Theory:
1. Electrons revolve around the nucleus in certain circular path called orbits.
2. Each orbit is associated with a definite amount of energy . Hence these are also called as " Energy Level " . These are designated as 1,2,3,4 ...or K,L,M,N ........
3. As long as electrons revolve in these orbits , they neither emit nor absorb energy. Hence these are called as Stationary Orbits.
4. When an electron jumps from a lower orbit to a higher orbit, it absorbs energy. When an electron drops from higher orbit to lower orbit, it emits energy. The emitted energy or absorbed energy is given by the formula
Δ E=E2-E1=hv
5. As the value of n increases, the size and energy of orbit increases.
6. The angular momentum of the electrons is quantized.
mvr=nh/2π
1. Electrons revolve around the nucleus in certain circular path called orbits.
2. Each orbit is associated with a definite amount of energy . Hence these are also called as " Energy Level " . These are designated as 1,2,3,4 ...or K,L,M,N ........
3. As long as electrons revolve in these orbits , they neither emit nor absorb energy. Hence these are called as Stationary Orbits.
4. When an electron jumps from a lower orbit to a higher orbit, it absorbs energy. When an electron drops from higher orbit to lower orbit, it emits energy. The emitted energy or absorbed energy is given by the formula
Δ E=E2-E1=hv
5. As the value of n increases, the size and energy of orbit increases.
6. The angular momentum of the electrons is quantized.
mvr=nh/2π
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