What is an orbital? How is it different from Bohr's orbit ?

Explanation

The region or space around the nucleus where the probability of finding the electron is maximum is called an orbital.
1) Bohr's orbit has a definite boundary and fixed energy at different distances from the nucleus. They are circular in shape.
2) Orbitals have no definite boundary. There are directional excepts orbital. The shape of each orbital is different.
3) Bohr's orbit can accommodate maximum of `(2n^(2))` electrons in it, but orbital can accommodate only 2 electrons.