Electrostatic force of attraction between oppositely charged particles
Explanation:
According to the Bohr's model of the atom, electrons are found in specific orbits having a well defined value of energy. Each orbit represents an energy level.
Electrons radiate energy when the move from a higher to a lower energy level and absorb energy when they move from a lower to a higher energy level.
The centripetal acceleration of the electron orbiting the positively charged nucleus is supplied by the electrostatic force of attraction between the negatively charged electron and the positively charged nucleus. This centripetal acceleration keeps the electron in the orbit.
