Question
Download Solution PDFElectron was discovered by ____________
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Electron: They are the negatively charged particles of an atom.
- Together, all of the electrons of an atom create a negative charge that balances the positive charge of the protons in the atomic nucleus.
- Experiments with beams of negative particles were performed in Britain by Joseph John ("J.J.") Thomson.
- It led to his conclusion in 1897 that they consisted of lightweight particles with a negative electric charge, nowadays known as electrons.
- J.J. Thomson's experiments with cathode-ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.
- Thomson's plum pudding model of the atom had negatively-charged electrons embedded within positively-charged protons.
- Thomson was awarded the 1906 Nobel Prize.
EXPLANATION:
- From the above discussion, it's clear that the electron was discovered by J.J Thomson.
The correct option is 4.
Additional Information
| Types | Discovered by |
| Electron | J.J.Thomson |
| Proton | , E. Goldstein |
| Neutron | James Chadwick |
Last updated on Mar 27, 2025
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