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Bohr's Model of an Atom

While revolvi...

Question

While revolving in discrete orbits, the electrons do not radiate energy. These orbits or shells are called ________.

A

isotope

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B

isobars

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C

nucleus

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D

energy levels

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Solution

The correct option is D energy levels
While revolving in discrete orbits, the electrons do not radiate energy. These orbits or shells are called energy levels.

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Q. According to Bohr's atomic model, electrons do not radiate energy while revolving in discrete orbits.

According to Bohr's model of the atom, while revolving in discrete orbits the electrons do radiate energy.

Q. (a) As long as an electron revolves in a particular orbit, the electron does not lose its energy. Therefore, these orbits are called stationary orbits and the electrons are said to be in stationary energy states.
(b) Each orbit or shell is associated with a definite amount of energy. Hence these are also called energy levels.
(c) An electron jumps from a lower energy level to a higher energy level, by absorbing energy. It jumps from a higher energy level to a lower energy level, by emitting energy in the form of electromagnetic radiation.
(d) Electrons move around the nucleus in specified circular paths called orbits or shells or energy levels and are designated as K, L, M, N shells respectively.

Arrange the above postulates of Bohr's theory in a correct sequence:

Q. Why don't electrons radiate energy when revolving in discrete orbits?

Q. "Electrons revolve in specific orbits or energy levels". This is a postulate of:

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