Q. The atom without neutron in it’s nucleus?

A
Helium
B
Hydrogen
C
Lidhium
D
Cadmium
Solution:
  • Hydrogen was discovered by Hentry Cavandeish.
  • Neuton was discovered by James Chadwick.
  • Neutron has no electrical charge.
  • Heaviest subatomic particle- Neutron.
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