Question

Electron revolving in a circular orbit do not fall into the nucleus because

• A. it continuously absorbs energy.
• B. it continuously radiates energy.
• C. it is a negatively charged particle.
• D. it does not radiate energy.

Answer 1

The correct option is D it does not radiate energy.

Rutherford put forward the nuclear model of an atom that says electrons revolve around the nucleus in circular paths. Any particle moving in a circular orbit would undergo acceleration.

During acceleration, charged particles would radiate energy. Thus, the revolving electron would lose energy and finally fall into the nucleus. But this does not actually happen because according to Bohr's model of atom electrons while revolving in discrete orbits do not radiate energy.

Option D is correct.