CBSE Class 9 Answered
discovery of neutron
Asked by laldinmawia3 | 09 Oct, 2019, 07:51: PM
Expert Answer
Discovery of the Neutron:
- In 1932, James Chadwick observed that when beryllium was exposed to α-particles, different kinds of particles were emitted.
- These particles had about the same mass as protons and carried no electrical charge.
- Hence, Chadwick named this particle as neutron.
- It was present in the nucleus along with the proton.
- A neutron is represented by letter n.
- Neutrons are present in the nucleus of all the atoms except hydrogen.
- As protons and neutrons are both present in the nucleus, they are together known as nucleons.
Answered by Ramandeep | 10 Oct, 2019, 12:05: PM
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