which scientist is known for developing the planetary model of the atom?\nniels bohr\nalbert…

Brief Explanations:

Niels Bohr developed the planetary model of the atom where electrons orbit the nucleus in fixed - energy levels, similar to planets orbiting the sun. Einstein is known for theories like relativity, Rydberg for the Rydberg formula related to spectral lines, and Millikan for the oil - drop experiment to measure the electron's charge.

Answer:

Niels Bohr