What is structure of electron shells?

Answer 1

Bohr suggested about the shell or orbit around the nucleus in an atom...

he suggested that orbit is circular but according to the researches. the different scientist told that orbit is three dimensional or spiral structure.....

Answer 2

Electron shells are energy levels where electrons are found around the nucleus of an atom. They are organized in discrete orbitals with increasing energy levels, typically labeled as K, L, M, and so on. Electrons fill these shells starting with the innermost shell (K) before moving to the outer shells.

Answer 3

it is a model made of a shell of electrographic electrons