Atomic Models
Atomic Models: Overview
This topic covers concepts such as Discovery of Neutron, Symbol of Neutron, Thomson's Model of an Atom, Conclusions from Thomson's Model of an Atom, Failure of Thomson's Model of an Atom, Rutherford's Gold Foil Experiment, etc.
Important Questions on Atomic Models
What are the properties of alpha particles?
Gamma rays are high energy electromagnetic waves.
Why do gamma rays are high frequency?
Elements with a high atomic number such as uranium, thorium, radium have a property of spontaneously emitting invisible, highly penetrating and high energy radiation. This property is called _____. (radioactivity/ chemical decay/ nuclear fission)
Draw a sketch of Bohr's model of an atom with three shells.
Define energy shells. How they represented? Arrange them in order of increasing energy.
State the postulates of Bohr's atomic model.
State the limitation of Thomson’s Atomic Model.
How can you say that a large empty space is there around a nucleus of atom?
Why did Rutherford select the gold-foil in his alpha-particle scattering experiment?
The main feature of Rutherford's atomic model was centrally located nucleus.
Which of the following statement is always correct?
If an atom contains one electron and one proton, will it carry any charge or not?
The stability of the atom could not be explained by _____ model. (Rutherford / Bohr)
Rutherford’s alpha-particle scattering experiment led to the discovery of the atomic _____.
The first model of an atom is given by
Electrons revolve around the nucleus in a fixed circular path called_____.
Which model gives a more relevant structure of an atom ?
