What did neils bohr discover?

Answer 1

He proposed a description of the structure of atoms, especially that of hydrogen in 1913. The Bohr model of the atom, a radical departure from earlier, classical descriptions, was the first that incorporated quantum theory and was the predecessor of wholly quantum-mechanical models.
He said that atom consists of a heavy positively charged nucleus with substantially lighter negatively charged electrons circling around it at considerable distance.
He predicted that element 72 would behave as he thought. The element was named hafnium (Latin for Copenhagen).
He worked with others to develop the atomic bomb, he made significant technical contributions, notably to the design of the so-called initiator for the plutonium bomb.

Answer 2

Based on conversations with Rutherford Niels Bohr developed the Bohr alias Bohr-Rutherford nuclear model of the Atom. It is the one you have met in elementary school where Protons and Neutrons form a core with electrons circling in fixed orbits around the core. The orbits explained (some kind of) radiation which had hitherto been a mystery.

Answer 3

He proposed a description of the structure of atoms, especially that of hydrogen in 1913. The Bohr model of the atom, a radical departure from earlier, classical descriptions, was the first that incorporated quantum theory and was the predecessor of wholly quantum-mechanical models.
He said that atom consists of a heavy positively charged nucleus with substantially lighter negatively charged electrons circling around it at considerable distance.
He predicted that element 72 would behave as he thought. The element was named hafnium (Latin for Copenhagen).
He worked with others to develop the atomic bomb, he made significant technical contributions, notably to the design of the so-called initiator for the plutonium bomb.

Answer 4

Niels Bohr is best known for his discovery of the atomic structure, specifically the concept of electrons orbiting the nucleus in discrete energy levels. This led to the development of the Bohr model of the atom, which laid the foundation for modern quantum mechanics.