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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
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संबंधित प्रश्न
Give the following a suitable word/phrase.
The sum of the number of protons and neutrons of an atom.
Define the term Atomic number.
Explain the rule with example according to which electrons are filled in various energy levels
FILL IN THE BLANK
The electrons revolving in shells close to the nucleus are called ................... electrons.
TRUE \ FALSE
Electrons are present in the nucleus.
WRITE SHORT ANSWER
What is the charge on a neutron ?
Draw the electronic configuration of the following elements clearly stating the number of neutrons and protons in their nucleus.
a. Beryllium b. Silicon
c. Chlorine d. Aluminium
e. Nitrogen
Name the negatively charged particle present in the atoms of all the elements.
Define the term Mass number.
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 __________.
