Mention the postulates of Niels Bohr put forth to overcome the objections raised against Rutherford's atomic model.
(N/A) Niels Bohr proposed the following postulates to address the limitations of Rutherford's atomic model:
$(a)$ Only certain special orbits,known as discrete orbits of electrons,are allowed inside the atom.
$(b)$ While revolving in these discrete orbits,the electrons do not radiate energy. These orbits or shells are referred to as energy levels.
$(a)$ Only certain special orbits,known as discrete orbits of electrons,are allowed inside the atom.
$(b)$ While revolving in these discrete orbits,the electrons do not radiate energy. These orbits or shells are referred to as energy levels.
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Similar Questions
$(a) (i)$ Name the scientist who proposed this model of the atom.
$(ii)$ Write the three postulates of this model.
$(iii)$ How many maximum electrons can be accommodated in the $M$ orbit?
$(b)$ What are canal rays? Give the characteristics of canal rays.
$(ii)$ Write the three postulates of this model.
$(iii)$ How many maximum electrons can be accommodated in the $M$ orbit?
$(b)$ What are canal rays? Give the characteristics of canal rays.
Medium
View SolutionWrite the conclusions drawn by Rutherford for the following observations during his $\alpha$-scattering experiment:
$(a)$ Most of the alpha particles passed straight through the gold foil.
$(b)$ Some alpha particles got deflected from their path.
$(c)$ $A$ very small fraction of alpha particles got deflected by $180^{\circ}$.
$(a)$ Most of the alpha particles passed straight through the gold foil.
$(b)$ Some alpha particles got deflected from their path.
$(c)$ $A$ very small fraction of alpha particles got deflected by $180^{\circ}$.
Medium
View SolutionGive reasons:
$(a)$ Mass number of an atom excludes the mass of an electron.
$(b)$ The nucleus of an atom is charged.
$(c)$ The alpha particle scattering experiment was possible by using gold foil only and not by foil of any other metal.
$(a)$ Mass number of an atom excludes the mass of an electron.
$(b)$ The nucleus of an atom is charged.
$(c)$ The alpha particle scattering experiment was possible by using gold foil only and not by foil of any other metal.
Medium
View SolutionWrite the atomic number of an element which has mass number $23$ and number of neutrons $12$ in the nucleus.
Medium
View SolutionRutherford's alpha $(\alpha)$ particles scattering experiment resulted in the discovery of:
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