Multiple choice

Electrons revolve round the nucleus because of

  1. cohesive force

  2. adhesive force

  3. centripetal force

  4. centrifugal force

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rutherford assumed that electrons are revolving around the nucleus in circular orbits of all possible redii. The necessary centripetal forces for circular motion of electrons around the nucleus is provided by electrostatic force of attraction between electrons and nucleus. So 3rd option is the correct answer.