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प्रश्न
What are the observations of the experiment done by Rutherford in order to determine the structure of an atom?
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उत्तर
Following were the observations made by Rutherford:
- Most of the alpha particle passed straight through the foil without any deflection from their path.
- A small fraction of them were deflected from their original path by small angles.
- Only a few particles bounced back
APPEARS IN
संबंधित प्रश्न
Give the following a suitable word/phrase
Arrangement of electrons in the shells of an atom.
Mention briefly the salient features of Dalton’s atomic theory (five points)
Explain the rule with example according to which electrons are filled in various energy levels
Tick the most appropriate answer.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
Tick the most appropriate answer
β-particles are actually a stream of
- protons
- electrons
- neutrons
- none of these
WRITE SHORT ANSWER
What is an atom?
Compare an electron and a proton in respect of mass and charge.
Name the sub-atomic particle whose charge is 0.
Explain how the modern atomic theory contradicted Dalton’s atomic theory.
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
