Can a nucleus emit alpha particles with different energies? Explain.

An alpha particle is

The charge of alpha particles is

(A) The force of repulsion between atomic nucleus and alpha -particle varies with distance accorcling to inverse square law. (R). Rutherford did alpha -particle scattering experiment.

Alpha particles do not have ………………

How water can be used in eparation of different substances ? Explain with example.

(A) Most of the mass of the atom is concen- trated in its nucleus (R) All alpha particles striking a gold sheet are scattered in different directions

Calculate the mass of an alpha - particle . Its binding energy is 28.2 MeV.