# data[].attributes.body
What was his atomic theory?
Answer: His atomic theory was that he proposed a theory of the hydrogen base oon the quatum theory.

# data[].attributes.body
What year did Niels Bohr propose his atomic theory?
Answer: 1913

# data[].attributes.headline
What did he contribute to the Atomic Theory?

# data[].attributes.subject
What did he contribute to the Atomic Theory?

# data[].attributes.body
In 1913, Niels Bohr proposed a theory for the hydrogen atom based on quantum theory that energy is transferred only in certain well defined quantities. Electrons should move around the nucleus but only in prescribed orbits. When jumping from one orbit to another with lower energy, a light quantum is emitted.