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प्रश्न
Give the evidence for the existence of nucleus in an atom.
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उत्तर
The evidence for the existence of a nucleus in an atom comes from these observations in Rutherford's experiment:
(1) Few of the rays get deviated from their path.
(2) One out of 12000 rays return on their path
From these two observations, the following conclusions can be drawn that support the existence of a nucleus in an atom: -
(1) Deviation shows the presence of some positive particle.
(2) The returning back of the ray on its own path shows, there is something which is solid in nature and its number (i.e 1/12000th ray) shows the particle is very small in size.
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संबंधित प्रश्न
What do you think would be the observation if the α-particle scattering experiment is carried out using a foil of a metal other than gold?
In Rutherford’s experiment, generally the thin foil of heavy atoms, like gold, platinum etc. have been used to be bombarded by the α-particles. If the thin foil of light atoms like aluminium etc. is used, what difference would be observed from the above results?
Draw a neat labelled diagram
Rutherford's scattering experiment
State true or false. If false, correct the statement.
In an atom, electrons revolve around the nucleus in fixed orbits.
How was it shown that atom has empty space?
What were the drawbacks of Rutherford’s model of an atom?
In Rutherford’s experiment, the bouncing of alpha particles suggests that the nucleus of an atom is negatively charged.
Rutherford’s model of an atom has a very small ______ at the center.
To study the internal structure of the atom, Rutherford used ______.
When an α-particle happens to come near a nucleus the intense electric field of these scatters it through a large angle then what is the effect of atomic electrons on α-particle?
