Question

which statement is true and which is false?

1.Beta particles are emitted by radioactive elements like radium and polonium
2.Rutherford observed the effects of alpha particles on the photographic plate.
3.Electrons cannot revolve only a orbits of a fixed angular moment mvr.
4.The hydrogen atom consists of a tiny nucleus and the electrons are revolving in one of a circular orbits of radius ‘r’around the nucleus.

Answer 1

Answer:

1. Ⓣ︎Ⓡ︎Ⓤ︎Ⓔ︎
2. Ⓣ︎Ⓡ︎Ⓤ︎Ⓔ︎
3. Ⓕ︎Ⓐ︎Ⓛ︎Ⓢ︎Ⓔ︎
4. Ⓣ︎Ⓡ︎Ⓤ︎Ⓔ︎

Ⓗ︎Ⓞ︎Ⓟ︎Ⓔ︎ Ⓘ︎Ⓣ︎ Ⓦ︎Ⓘ︎Ⓛ︎Ⓛ︎ Ⓗ︎Ⓔ︎Ⓛ︎Ⓟ︎ Ⓨ︎Ⓞ︎Ⓤ︎.

Ⓜ︎Ⓐ︎Ⓡ︎Ⓚ︎ Ⓐ︎Ⓢ︎ Ⓑ︎Ⓡ︎Ⓐ︎Ⓘ︎Ⓝ︎Ⓛ︎Ⓘ︎Ⓢ︎Ⓣ︎.