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प्रश्न
State two observations which show that atom is not indivisible.
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उत्तर
Two observations, which show that an atom is divisible are-
(1) Discharge-tube experiment : 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.
(2) In Goldstein's experiment, the faint red glow in the gas discharge tube shows the presence of positively charged subatomic particles called protons.
These experiments show that atoms are divisible and made up of subatomic particles, electrons, protons and neutrons.
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संबंधित प्रश्न
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
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Elements having a tendency to accept electrons are called metals
ANSWER IN DETAIL
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