Question

Alpha particle is


Helium ion

Helium atom

Helium molecule

​

Answer 1

Alpha particle is Helium Atom.

________

Details about Rutherford's Model of an Atom :

★ Rutherford's Model of an Atom

1. Most of the alpha particles pass straight through te gold foil without any deflection from their original path.

2. A few alpha particles are deflected through small angles and a few are deflected through small angles.

3. A very few alpha particles completely rebound on hitting the gold foil and turn back on thier path.

Limitations :

Rutherford's model of an atom could not able to explain the stability of the atom because the accelerated circular motion of revolving electrons should make them lose energy by radiation, fall into the nucleus and make the atom to collapse quickly.

Answer 2

Alpha particle is Helium atom