Chemistry

12 June, 17:35

The discovery and characterization of cathode rays was important to the development of atomic theory because

1. it led to the suggestion of the existence of the neutron.

2. it indicated that all atoms contain pro - tons.

3. it indicated that all atoms contained elec - trons.

4. it indicated that all atoms contain α particles.

5. it provided a basis for weight calculations in chemical changes

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