Answer:
francium, caesium, helium
The type of reaction caused by particle accelerators is called photo-fission reaction
Answer:
33.5 grams of oxygen will be produced
Explanation:
Change can be the biggest part of your life change can be good or bad
Answer:
1. Rutherford did the scattering experiment and observed that some of the rays bounce back. He concluded that there is a mass in which positive charge is concentrated. This marks the discovery of nucleus.
2. J.J Thomson discovered electrons by conducting cathode ray experiment.
3. Dalton postulated that matter is made up of small particles caled atoms