The Bohr models for calcium and oxygen are shown in the images attached.
How do you arrive at the Bohr model for an atom?
The Bohr model states that when electrons move between these quantized energy levels, they can either emit or absorb energy. The Bohr model, however, has drawbacks and falls short of accurately describing how electrons behave, especially in heavier atoms.
We can see the arrangements of the electrons in orbits which corresponds to the idea of Bohr about the nature of the atoms as we know them.