Answer:
Bohr
Step-by-step explanation:
Neils Bohr was the scientist that suggested that electrons follow predictable orbits round the nucleus.
- In 1913, he put forward his own model of the atom based on the quantum mechanics originally developed by Planck.
- He assumed the Rutherford's model and suggested that the extranuclear part consists of electrons in specific spherical orbits around the nucleus.
- The orbits/energy levels are designated as K, L, M, N.....