Structure of Atom
Sub-atomic particles:
Name |
Symbol |
Charge/C |
Relative charge |
Mass/kg |
Electron Proton Neutron |
e p n |
–1.6022 × 10–19 +1.6022 × 10–19 0 |
–1 +1 0 |
9.1094 × 10–31 1.6726 × 10–27 1.6749 × 10–27 |
Discovery of Electron
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Glass tube is partially evacuated (Low pressure inside the tube)
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Very high voltage is applied across the electrodes
Results:
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Cathode rays move from the cathode to the anode.
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Cathode rays are not visible.
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These rays travel in a straight line in the absence of electric and magnetic fields.
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The behaviour of cathode rays is similar to negatively charged particles (electrons) in the presence of an electrical …
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