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Byju's Answer
Standard X
Chemistry
Bohr's Model of Atom
around the nu...
Question
_________ around the nucleus are arranged in different energy levels or shell of the atom.
A
Electron
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B
Proton
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C
Neutron
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D
Quarks
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Solution
The correct option is
A
Electron
Electrons revolve around the nucleus in fixed orbits or shells.
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Similar questions
Q.
Electrons revolve around the ___________ in different energy levels or shells and each shell is associated with definite 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.
In
H
-atom or one electron system energy levels of orbitals of a shell are degenerates whereas in many electron system energy levels of orbitals of a shell are non degenerates because of :
Q.
When a nucleus in radioactive atom undergoes radioactive decay, the electronic energy levels of the atom:
Q.
In an atom, electrons are arranged around the nucleus in various shells. What do ‘valence electrons’ refer to?
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