- Most of ⍺ particles passes through gold foil
- Some ⍺ particles get deflected with very small angles from their path
- Very few i.e. 1/ 12000 were reflected back on same path
- Most ⍺ particles pass through gold foil, therefore, atom must have large empty space in it.
- Some ⍺ particles gets deflected, hence there is some strong dense opposition. ⍺ particle is positively charge. If ⍺ particle is deflected then, opposition must be having a positive charge.
- Very few ⍺ particles are deflected this shows that, positive and other mass of atom is in very small volume in the atom.
- Moreover, it was identified that radius of dense space is 105 times smaller than size of atoms.
- A positively charged dense mass situated at the centre of atom is nucleus
- Size of nucleus is small as compared to size of atom
- Electrons revolve around nucleus in circular path
Rutherford’s model failed to explain stability of atom. According to Rutherford’s model, electrons revolve around the nucleus of an atom. If electrons are revolving, this shows electrons possess kinetic energy and acceleration . Due to this, electrons must radiate energy. If energy is continuously radiating then electrons must be losing energy and eventually must fall in the nucleus. This could make atom highly unstable but in reality atom is stable.
This article is helpful for Class 9 Science
Keywords: Rutherford’s model, Drawbacks of Rutherford’s model, Structure of atom, Atomic structure
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