Which of the following statement(s) is/are incorrect according to the postulates of Bohr's atomic model?

(I) Electrons revolve around the nucleus in discrete circular paths called orbits.
(II) The energy of an electron in the orbit changes with time.
(III) Electrons move from a lower orbit to a higher orbit upon absorbing energy.

II and III

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Only II

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I and II

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I and III

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Solution

The correct option is B Only II
Option (c) is correct.

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Q. Statement 1 (S1): To overcome the drawbacks of Rutherford’s atomic model, Bohr suggested that electrons revolve around the nucleus in certain discrete orbits.
Statement 2 (S2): According to Bohr, the electrons do not radiate energy while revolving in discrete orbits.

Q. According to Neils Bohr, electrons revolve around the nucleus of an atom in discrete orbits.

The postulates of Bohr's atomic model are given below. Arrange them in the correct sequence:
(1) As long as the 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.
(2) Electrons revolve around the nucleus in specified circular paths called orbits or shells.
(3) The energy associated with a certain energy level increases with the increase of its distance from the nucleus.
(4) An electron jumps from a lower energy level to a higher energy level by absorbing energy. But when it jumps from a higher to lower energy level, energy is emitted in the form of electromagnetic radiation.
(5) Each orbit or shell is associated with a definite amount of energy. Hence, these are also called energy levels and are designated asK, L, M, and N respectively.

Electrons in an atom revolve around the nucleus in certain selected concentric paths which are called orbits. Which of the following orbit do you think will have highest energy?

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

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The correct option is B Only IIOption (c) is correct.

The correct option is B Only II
Option (c) is correct.