Question
State two observations which show that atom is not indivisible.
✓
Answer
Two observations which shows that atom is not indivisible are:
- In J. J. Thomson’s experiment, the stream of cathode rays in the gas discharge tube shows the presence of negatively charged subatomic particles called electrons.
- In Goldstein’s experiment, the faint red glow in the gas discharge tube shows the presence of positively charged subatomic particles called protons.
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