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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?
If an atom contains one electron and one proton, will it carry as a whole is neutral
Name the sub-atomic particle whose charge is -1.
Give the symbol and charge of each particle.
Explain the rule according to which electrons are filled in various energy levels.
What are valence electrons?
Element X has electronic configurations 2, 8, 18, 8, 1. Without identifying X,
- Predict the sign and charge on a simple ion of X.
- Write if X will be an oxidizing agent or a reducing agent. Why?
Name or state the following:
Ion formed by the gain of an electron(s)
Give a reason why noble gases have a stable electronic configuration.
Anode rays travel in straight lines.
