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प्रश्न
The subatomic particle called electron was discovered by :
पर्याय
J.J. Thomson
Neils Bohr
James Chadwick
E. Goldstein
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उत्तर
J.J. Thompson
J.J. Thompson discovered electrons by conducting a cathode-ray experiment.
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संबंधित प्रश्न
The atom of an element X has 7 electrons in its M shell.
What type of ion will be formed by an atom of element X? Write the symbol of the ion formed.
What could element X be?
What is the nature of the charge on Cathode rays .
Name the sub-atomic particle whose charge is -1.
Explain the rule according to which electrons are filled in various energy levels.
Choose the correct option:
The mass number of an atom whose unipositive ion has 10 electrons and 12 neutrons is :
If electrons are getting added to en element Y; then
What charge will Y migrate to during the process of electrolysis?
Choose the correct answer from A, B, C and D:
When a metal atom becomes an ion:
Give a simple diagram to show the arrangement of the electrons in an atom of sulphur.
Write down the electronic configuration of the following
- 2713X,
- 3517Y.
Write down the number of electrons in X and neutrons in Y and the formula of the compound formed by X and Y.[XY3]
Anode rays travel in straight lines.
