Question

Movement of electrons about a central nucleus is a concept by whom?

Mendeleev
Bohr
Thomson
Dalton
Chadwick

Answer 1

the answer is bohr hope this helps :)

Answer 2

Bohr.

Step-by-step explanation:

In 1913, N.Bohr proposed an atomic model for atom. He proposed that in an atom there is a central nucleus and electrons move around this center in a fixed path known as shell.

The shells or path have a fixed size and energy. The electrons do not lose energy during this movement.

There is possibility of energy change (emit or absorb) in an electron if they move from one shell to another.